[PPP] pppoe: Fix double-free on skb after transmit failure

When I got rid of the second packet in __pppoe_xmit I created
a double-free on the skb because of the goto abort on failure.
This patch removes that.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/pppoe.c

@@ -879,8 +879,7 @@ static int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
 	dev->hard_header(skb, dev, ETH_P_PPP_SES,
 			 po->pppoe_pa.remote, NULL, data_len);
 
-	if (dev_queue_xmit(skb) < 0)
-		goto abort;
+	dev_queue_xmit(skb);
 
 	return 1;