NFC: rawsock: Fix a memory leak

In the rawsock data exchange callback, the sk_buff is not freed
on error.

Signed-off-by: Thierry Escande <[e-mail]>
Signed-off-by: Samuel Ortiz <[e-mail]>

net/nfc/rawsock.c

···
 
 	err = rawsock_add_header(skb);
 	if (err)
-		goto error;
+		goto error_skb;
 
 	err = sock_queue_rcv_skb(sk, skb);
 	if (err)
-		goto error;
+		goto error_skb;
 
 	spin_lock_bh(&sk->sk_write_queue.lock);
 	if (!skb_queue_empty(&sk->sk_write_queue))
···
 
 	sock_put(sk);
 	return;
+
+error_skb:
+	kfree_skb(skb);
 
 error:
 	rawsock_report_error(sk, err);