[PATCH] wifi: rtw88: unlock on error path in rtw_ops_add_interface()

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw88/mac80211.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 7aa6edad0d01..02cd19ee6e4c 100644
--- 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;
-- 
2.39.2