[PATCH 4.4 20/62] rtlwifi: rtl8192cu: Prevent leaking urb

[Greg Kroah-Hartman]

From: Reto Schneider <code@xxxxxxxxxxxxxxxxx>

[ Upstream commit 03128643eb5453a798db5770952c73dc64fcaf00 ]

If usb_submit_urb fails the allocated urb should be unanchored and
released.

Signed-off-by: Reto Schneider <code@xxxxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200622132113.14508-3-code@xxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtlwifi/usb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 9408c1f8e3977..f01ef8ecfaf39 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -755,8 +755,11 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
 
 		usb_anchor_urb(urb, &rtlusb->rx_submitted);
 		err = usb_submit_urb(urb, GFP_KERNEL);
-		if (err)
+		if (err) {
+			usb_unanchor_urb(urb);
+			usb_free_urb(urb);
 			goto err_out;
+		}
 		usb_free_urb(urb);
 	}
 	return 0;
-- 
2.25.1