wifi: mt76: mt7996: fix memory leak in mt7996_mcu_exit

Always purge mcu skb queues in mt7996_mcu_exit routine even if
mt7996_firmware_state fails.

Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index d781c6e..d593ed9 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -2460,13 +2460,14 @@ void mt7996_mcu_exit(struct mt7996_dev *dev)
        __mt76_mcu_restart(&dev->mt76);
        if (mt7996_firmware_state(dev, false)) {
                dev_err(dev->mt76.dev, "Failed to exit mcu\n");
-               return;
+               goto out;
        }
 
        mt76_wr(dev, MT_TOP_LPCR_HOST_BAND(0), MT_TOP_LPCR_HOST_FW_OWN);
        if (dev->hif2)
                mt76_wr(dev, MT_TOP_LPCR_HOST_BAND(1),
                        MT_TOP_LPCR_HOST_FW_OWN);
+out:
        skb_queue_purge(&dev->mt76.mcu.res_q);
 }