wd: fix memory leak

Unmap mapped IO in wd_probe1() if register_netdev() failed.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wd.c

@@ -358,8 +358,10 @@ static int __init wd_probe1(struct net_device *dev, int ioaddr)
 #endif
 
 	err = register_netdev(dev);
-	if (err)
+	if (err) {
 		free_irq(dev->irq, dev);
+		iounmap(ei_status.mem);
+	}
 	return err;
 }