mt76: mt7921: get rid of mt7921_mcu_exit

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index d0a7c3128d5a..4217c35acb82 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -773,12 +773,6 @@  int mt7921_run_firmware(struct mt7921_dev *dev)
 }
 EXPORT_SYMBOL_GPL(mt7921_run_firmware);
 
-void mt7921_mcu_exit(struct mt7921_dev *dev)
-{
-	skb_queue_purge(&dev->mt76.mcu.res_q);
-}
-EXPORT_SYMBOL_GPL(mt7921_mcu_exit);
-
 int mt7921_mcu_set_tx(struct mt7921_dev *dev, struct ieee80211_vif *vif)
 {
 	struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
index 5ca584bb2fc6..953459031ae3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -301,7 +301,6 @@  int mt7921_mcu_get_rx_rate(struct mt7921_phy *phy, struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta, struct rate_info *rate);
 int mt7921_mcu_fw_log_2_host(struct mt7921_dev *dev, u8 ctrl);
 void mt7921_mcu_rx_event(struct mt7921_dev *dev, struct sk_buff *skb);
-void mt7921_mcu_exit(struct mt7921_dev *dev);
 
 static inline void mt7921_irq_enable(struct mt7921_dev *dev, u32 mask)
 {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
index b5fb22b8e086..624eb75c15cd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -116,7 +116,7 @@  static void mt7921e_unregister_device(struct mt7921_dev *dev)
 	mt7921_mcu_drv_pmctrl(dev);
 	mt7921_dma_cleanup(dev);
 	mt7921_wfsys_reset(dev);
-	mt7921_mcu_exit(dev);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
 
 	tasklet_disable(&dev->irq_tasklet);
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
index af26d59fa2f0..487acd6e2be8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c
@@ -48,7 +48,7 @@  static void mt7921s_unregister_device(struct mt7921_dev *dev)
 
 	mt76s_deinit(&dev->mt76);
 	mt7921s_wfsys_reset(dev);
-	mt7921_mcu_exit(dev);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
 
 	mt76_free_device(&dev->mt76);
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/usb.c b/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
index dc38baef273a..4e4cd2dc2aeb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/usb.c
@@ -158,7 +158,7 @@  static void mt7921u_cleanup(struct mt7921_dev *dev)
 {
 	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 	mt7921u_wfsys_reset(dev);
-	mt7921_mcu_exit(dev);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
 	mt76u_queues_deinit(&dev->mt76);
 }
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c
index cd2f09743d2f..efbd3954c883 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/usb_mac.c
@@ -185,7 +185,7 @@  int mt7921u_init_reset(struct mt7921_dev *dev)
 	set_bit(MT76_RESET, &dev->mphy.state);
 
 	wake_up(&dev->mt76.mcu.wait);
-	mt7921_mcu_exit(dev);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
 
 	mt76u_stop_rx(&dev->mt76);
 	mt76u_stop_tx(&dev->mt76);
@@ -208,7 +208,7 @@  int mt7921u_mac_reset(struct mt7921_dev *dev)
 	set_bit(MT76_MCU_RESET, &dev->mphy.state);
 
 	wake_up(&dev->mt76.mcu.wait);
-	mt7921_mcu_exit(dev);
+	skb_queue_purge(&dev->mt76.mcu.res_q);
 
 	mt76u_stop_rx(&dev->mt76);
 	mt76u_stop_tx(&dev->mt76);