drm/logicvc: add missing of_node_put() in logicvc_layers_init()

The of_node_put() need be called in error path in logicvc_layers_init().

Fixes: efeeaefe9be5 ("drm: Add support for the LogiCVC display controller")
Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Yang Yingliang <[e-mail]>
Signed-off-by: Paul Kocialkowski <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/logicvc/logicvc_layer.c

···
 		}
 
 		ret = logicvc_layer_init(logicvc, layer_node, index);
-		if (ret)
+		if (ret) {
+			of_node_put(layers_node);
 			goto error;
+		}
 	}
 
 	of_node_put(layers_node);