wifi: wl1251: fix memory leak in wl1251_tx_work

The skb dequeued from tx_queue is lost when wl1251_ps_elp_wakeup fails
with a -ETIMEDOUT error. Fix that by queueing the skb back to tx_queue.

Fixes: c5483b7 ("wl12xx: check if elp wakeup failed")
Signed-off-by: Abdun Nihaal <[email protected]>
Reviewed-by: Michael Nemanov <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>

Author: nifey

drivers/net/wireless/ti/wl1251/tx.c

@@ -342,8 +342,10 @@ void wl1251_tx_work(struct work_struct *work)
 	while ((skb = skb_dequeue(&wl->tx_queue))) {
 		if (!woken_up) {
 			ret = wl1251_ps_elp_wakeup(wl);
-			if (ret < 0)
+			if (ret < 0) {
+				skb_queue_head(&wl->tx_queue, skb);
 				goto out;
+			}
 			woken_up = true;
 		}