S2io: Handle TX completions on the same CPU as the sender for MIS-X interrupts

- Handling TX completions on the same cpu as the sender.
Signed-off-by: NSurjit Reang <surjit.reang@neterion.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/s2io.c

@@ -4172,6 +4172,9 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 	dev->trans_start = jiffies;
 	spin_unlock_irqrestore(&fifo->tx_lock, flags);
 
+	if (sp->config.intr_type == MSI_X)
+		tx_intr_handler(fifo);
+
 	return 0;
 pci_map_failed:
 	stats->pci_map_fail_cnt++;