Input: iforce - do not return ENOMEM upon successful allocation

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/joystick/iforce/iforce-main.c

@@ -345,7 +345,7 @@ int iforce_init_device(struct iforce *iforce)
 	int i;
 
 	input_dev = input_allocate_device();
-	if (input_dev)
+	if (!input_dev)
 		return -ENOMEM;
 
 	init_waitqueue_head(&iforce->wait);