usb: irda-usb free urb cleanup

- usb_free_urb() cleanup
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/net/irda/irda-usb.c

@@ -1793,10 +1793,8 @@ err_out_3:
 err_out_2:
 	usb_free_urb(self->tx_urb);
 err_out_1:
-	for (i = 0; i < self->max_rx_urb; i++) {
-		if (self->rx_urb[i])
+	for (i = 0; i < self->max_rx_urb; i++)
 		usb_free_urb(self->rx_urb[i]);
-	}
 	free_netdev(net);
 err_out:
 	return ret;