ntb_netdev: correct skb leak

If ntb_netdev is unable to pass a new skb to the ntb transport for
future rx packets, it should free the newly alloc'ed skb in the error
case.  Found by Kernel memory leak detector.
Signed-off-by: Jon Mason <jon.mason@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/ntb_netdev.c

@@ -119,6 +119,7 @@ static void ntb_netdev_rx_handler(struct ntb_transport_qp *qp, void *qp_data,
 
 	rc = ntb_transport_rx_enqueue(qp, skb, skb->data, ndev->mtu + ETH_HLEN);
 	if (rc) {
+		dev_kfree_skb(skb);
 		ndev->stats.rx_errors++;
 		ndev->stats.rx_fifo_errors++;
 	}