hwmon: (gsc-hwmon) use device_for_each_child_node_scoped()

Switch to the _scoped() version introduced in commit 365130fd
("device property: Introduce device_for_each_child_node_scoped()")
to remove the need for manual calling of fwnode_handle_put() in the
paths where the code exits the loop early.
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240404-hwmon_device_for_each_child_node_scoped-v1-2-53997abde43c@gmail.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/gsc-hwmon.c

@@ -249,7 +249,6 @@ gsc_hwmon_get_devtree_pdata(struct device *dev)
 {
 	struct gsc_hwmon_platform_data *pdata;
 	struct gsc_hwmon_channel *ch;
-	struct fwnode_handle *child;
 	struct device_node *fan;
 	int nchannels;
 
@@ -276,25 +275,21 @@ gsc_hwmon_get_devtree_pdata(struct device *dev)
 
 	ch = pdata->channels;
 	/* allocate structures for channels and count instances of each type */
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (fwnode_property_read_string(child, "label", &ch->name)) {
 			dev_err(dev, "channel without label\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 		if (fwnode_property_read_u32(child, "reg", &ch->reg)) {
 			dev_err(dev, "channel without reg\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 		if (fwnode_property_read_u32(child, "gw,mode", &ch->mode)) {
 			dev_err(dev, "channel without mode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 		if (ch->mode > mode_max) {
 			dev_err(dev, "invalid channel mode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}