bus: vexpress-config: add missing of_node_put after calling of_parse_phandle

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

drivers/bus/vexpress-config.c

@@ -178,6 +178,7 @@ static int vexpress_config_populate(struct device_node *node)
 
 	parent = class_find_device(vexpress_config_class, NULL, bridge,
 			vexpress_config_node_match);
+	of_node_put(bridge);
 	if (WARN_ON(!parent))
 		return -ENODEV;