[igbvf] Assign random MAC address if none is set

If the VF doesn't have a MAC address assigned we should create a
random MAC address.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/igbvf/igbvf_main.c

 			DBG ("Error reading MAC address\n");
 			goto err_hw_init;
 		}
+		if ( ! is_valid_ether_addr(adapter->hw.mac.addr) ) {
+			/* Assign random MAC address */
+			eth_random_addr(adapter->hw.mac.addr);
+		}
 	}
 
 	memcpy ( netdev->hw_addr, adapter->hw.mac.addr, ETH_ALEN );
 
-	if ( ! is_valid_ether_addr( netdev->hw_addr ) ) {
-		DBG ("Invalid MAC Address: "
-		        "%02x:%02x:%02x:%02x:%02x:%02x\n",
-		        netdev->hw_addr[0], netdev->hw_addr[1],
-		        netdev->hw_addr[2], netdev->hw_addr[3],
-		        netdev->hw_addr[4], netdev->hw_addr[5]);
-		err = -EIO;
-		goto err_hw_init;
-	}
-
 	/* reset the hardware with the new settings */
 	igbvf_reset ( adapter );