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: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index c72787a..3c915b8 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -4172,6 +4172,9 @@
 	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++;