Input: sun4i-lradc-keys - switch to for_each_child_of_node_scoped

Use the scoped variant of the macro to simplify the code and error
handling. This makes the error handling more robust by ensuring that
the child node is always freed.

Signed-off-by: Javier Carrasco <[email protected]>
Reviewed-by: Andre Przywara <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: javiercarrascocruz

drivers/input/keyboard/sun4i-lradc-keys.c

@@ -202,7 +202,7 @@ static void sun4i_lradc_close(struct input_dev *dev)
 static int sun4i_lradc_load_dt_keymap(struct device *dev,
 				      struct sun4i_lradc_data *lradc)
 {
-	struct device_node *np, *pp;
+	struct device_node *np;
 	int i;
 	int error;
 
@@ -223,28 +223,25 @@ static int sun4i_lradc_load_dt_keymap(struct device *dev,
 		return -ENOMEM;
 
 	i = 0;
-	for_each_child_of_node(np, pp) {
+	for_each_child_of_node_scoped(np, pp) {
 		struct sun4i_lradc_keymap *map = &lradc->chan0_map[i];
 		u32 channel;
 
 		error = of_property_read_u32(pp, "channel", &channel);
 		if (error || channel != 0) {
 			dev_err(dev, "%pOFn: Inval channel prop\n", pp);
-			of_node_put(pp);
 			return -EINVAL;
 		}
 
 		error = of_property_read_u32(pp, "voltage", &map->voltage);
 		if (error) {
 			dev_err(dev, "%pOFn: Inval voltage prop\n", pp);
-			of_node_put(pp);
 			return -EINVAL;
 		}
 
 		error = of_property_read_u32(pp, "linux,code", &map->keycode);
 		if (error) {
 			dev_err(dev, "%pOFn: Inval linux,code prop\n", pp);
-			of_node_put(pp);
 			return -EINVAL;
 		}