net: fixup type in netdev_start_xmit()

Return code should be formally "netdev_tx_t".
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/netdevice.h

@@ -4373,7 +4373,7 @@ static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_devi
 					    struct netdev_queue *txq, bool more)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
-	int rc;
+	netdev_tx_t rc;
 
 	rc = __netdev_start_xmit(ops, skb, dev, more);
 	if (rc == NETDEV_TX_OK)