greybus: svc: clean up hello error path

While currently safe, it is unnecessary (and confusing) to try to
destroy the watchdog when watchdog creation fails.

Change the corresponding error path to only deregister the svc.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20220202113347.1288-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/greybus/svc.c

@@ -861,7 +861,7 @@ static int gb_svc_hello(struct gb_operation *op)
 	ret = gb_svc_watchdog_create(svc);
 	if (ret) {
 		dev_err(&svc->dev, "failed to create watchdog: %d\n", ret);
-		goto err_unregister_device;
+		goto err_deregister_svc;
 	}
 
 	gb_svc_debugfs_init(svc);
@@ -874,9 +874,10 @@ static int gb_svc_hello(struct gb_operation *op)
 
 err_remove_debugfs:
 	gb_svc_debugfs_exit(svc);
-err_unregister_device:
 	gb_svc_watchdog_destroy(svc);
+err_deregister_svc:
 	device_del(&svc->dev);
+
 	return ret;
 }