usb: gadget: function: Fixed the return value on error path

Fixed the return value on failure. status variable
is set to 0 at usb_assign_descriptors call and the same is
returned on error which is incorrect.
Acked-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NPavitrakumar Managutte <pavitra1729@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/gadget/function/f_rndis.c

@@ -802,8 +802,10 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
 
 	if (rndis->manufacturer && rndis->vendorID &&
 			rndis_set_param_vendor(rndis->config, rndis->vendorID,
-					       rndis->manufacturer))
+					       rndis->manufacturer)) {
+		status = -EINVAL;
 		goto fail_free_descs;
+	}
 
 	/* NOTE:  all that is done without knowing or caring about
 	 * the network link ... which is unavailable to this code