net: sgi: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/sgi/ioc3-eth.c

@@ -99,7 +99,7 @@ struct ioc3_private {
 
 static int ioc3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 static void ioc3_set_multicast_list(struct net_device *dev);
-static int ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev);
 static void ioc3_timeout(struct net_device *dev);
 static inline unsigned int ioc3_hash(const unsigned char *addr);
 static inline void ioc3_stop(struct ioc3_private *ip);
@@ -1390,7 +1390,7 @@ static struct pci_driver ioc3_driver = {
 	.remove		= ioc3_remove_one,
 };
 
-static int ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	unsigned long data;
 	struct ioc3_private *ip = netdev_priv(dev);

drivers/net/ethernet/sgi/meth.c

@@ -697,7 +697,7 @@ static void meth_add_to_tx_ring(struct meth_private *priv, struct sk_buff *skb)
 /*
  * Transmit a packet (called by the kernel)
  */
-static int meth_tx(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t meth_tx(struct sk_buff *skb, struct net_device *dev)
 {
 	struct meth_private *priv = netdev_priv(dev);
 	unsigned long flags;