pinctrl: pinconf-generic: Use scope based of_node_put() cleanups

Use scope based of_node_put() cleanup to simplify code.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/20240504-pinctrl-cleanup-v2-17-26c5f2dc1181@nxp.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: MrVan

drivers/pinctrl/pinconf-generic.c

@@ -382,7 +382,6 @@ int pinconf_generic_dt_node_to_map(struct pinctrl_dev *pctldev,
 		unsigned int *num_maps, enum pinctrl_map_type type)
 {
 	unsigned int reserved_maps;
-	struct device_node *np;
 	int ret;
 
 	reserved_maps = 0;
@@ -394,13 +393,11 @@ int pinconf_generic_dt_node_to_map(struct pinctrl_dev *pctldev,
 	if (ret < 0)
 		goto exit;
 
-	for_each_available_child_of_node(np_config, np) {
+	for_each_available_child_of_node_scoped(np_config, np) {
 		ret = pinconf_generic_dt_subnode_to_map(pctldev, np, map,
 					&reserved_maps, num_maps, type);
-		if (ret < 0) {
-			of_node_put(np);
+		if (ret < 0)
 			goto exit;
-		}
 	}
 	return 0;