USB: usb_wwan: remove bogus disconnect test in close

Remove bogus (and unnecessary) test for serial->dev being NULL in close.

The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/usb_wwan.c

@@ -421,7 +421,6 @@ void usb_wwan_close(struct usb_serial_port *port)
 
 	portdata = usb_get_serial_port_data(port);
 
-	if (serial->dev) {
 	/* Stop reading/writing urbs */
 	spin_lock_irq(&intfdata->susp_lock);
 	portdata->opened = 0;
@@ -431,10 +430,10 @@ void usb_wwan_close(struct usb_serial_port *port)
 		usb_kill_urb(portdata->in_urbs[i]);
 	for (i = 0; i < N_OUT_URB; i++)
 		usb_kill_urb(portdata->out_urbs[i]);
+
 	/* balancing - important as an error cannot be handled*/
 	usb_autopm_get_interface_no_resume(serial->interface);
 	serial->interface->needs_remote_wakeup = 0;
-	}
 }
 EXPORT_SYMBOL(usb_wwan_close);