of: property: Use scope based cleanup on port_node

Use __free cleanup handler which ensures that the resource is freed when
it goes out of scope, thus removing the need to manually clean it up
using of_node_put.

Suggested-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Shresth Prasad <shresthprasad7@gmail.com>
Link: https://lore.kernel.org/r/20240428115226.41345-2-shresthprasad7@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: Yttrium-32

drivers/of/property.c

@@ -576,7 +576,8 @@ EXPORT_SYMBOL_GPL(of_prop_next_string);
 int of_graph_parse_endpoint(const struct device_node *node,
 			    struct of_endpoint *endpoint)
 {
-	struct device_node *port_node = of_get_parent(node);
+	struct device_node *port_node __free(device_node) =
+			    of_get_parent(node);
 
 	WARN_ONCE(!port_node, "%s(): endpoint %pOF has no parent node\n",
 		  __func__, node);
@@ -591,8 +592,6 @@ int of_graph_parse_endpoint(const struct device_node *node,
 	of_property_read_u32(port_node, "reg", &endpoint->port);
 	of_property_read_u32(node, "reg", &endpoint->id);
 
-	of_node_put(port_node);
-
 	return 0;
 }
 EXPORT_SYMBOL(of_graph_parse_endpoint);