netxen: fix msi irq setup

The pdev->irq was not saved in netxen_adapter, causing request_irq()
with invalid irq number.

This was broken in commit be339aee634d5cb98a8df8d6febe04002ec497f3
("netxen: fix irq tear down and msix leak.").

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 86ca081..50477f5 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -539,6 +539,7 @@
 		adapter->msi_tgt_status =
 			msi_tgt_status[adapter->ahw.pci_func];
 		dev_info(&pdev->dev, "using msi interrupts\n");
+		adapter->msix_entries[0].vector = pdev->irq;
 		return;
 	}