wifi: rtw88: unlock on error path in rtw_ops_add_interface()

Call mutex_unlock(&rtwdev->mutex); before returning on this error path.

Fixes: f0e741e4ddbc ("wifi: rtw88: add bitmap for dynamic port settings")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/ddd10a74-5982-4f65-8c59-c1cca558d239@kili.mountain

diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 7aa6edad0d012738887d45febf34a54c8065d6e5..02cd19ee6e4c409e76e28e84df6dca308500e240 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -173,8 +173,10 @@ static int rtw_ops_add_interface(struct ieee80211_hw *hw,
        mutex_lock(&rtwdev->mutex);
 
        port = find_first_zero_bit(rtwdev->hw_port, RTW_PORT_NUM);
-       if (port >= RTW_PORT_NUM)
+       if (port >= RTW_PORT_NUM) {
+               mutex_unlock(&rtwdev->mutex);
                return -EINVAL;
+       }
        set_bit(port, rtwdev->hw_port);
 
        rtwvif->port = port;