[PATCH] USB: Resource leak fix for whiteheat driver

We may return from drivers/usb/serial/whiteheat.c::whiteheat_attach()
without freeing `result' if we leave via the no_firmware: label.

Spotted by the coverity checker as #670

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/whiteheat.c

@@ -508,6 +508,7 @@ no_firmware:
 	err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->description);
 	err("%s: If the firmware is not running (status led not blinking)\n", serial->type->description);
 	err("%s: please contact support@connecttech.com\n", serial->type->description);
+	kfree(result);
 	return -ENODEV;
 
 no_command_private: