Input: gpio_keys - 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/20240412-input_device_for_each_child_node_scoped-v1-3-dbad1bc7ea84@gmail.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/gpio_keys.c

@@ -768,7 +768,6 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 {
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
-	struct fwnode_handle *child;
 	int nbuttons, irq;
 
 	nbuttons = device_get_child_node_count(dev);
@@ -790,7 +789,7 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 
 	device_property_read_string(dev, "label", &pdata->name);
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (is_of_node(child)) {
 			irq = of_irq_get_byname(to_of_node(child), "irq");
 			if (irq > 0)
@@ -808,7 +807,6 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &button->code)) {
 			dev_err(dev, "Button without keycode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}