gpu: host1x: Use for_each_available_child_of_node_scoped()

Avoids the need for manual cleanup of_node_put() in early exits
from the loop.

Signed-off-by: Jinjie Ruan <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Jinjie Ruan

drivers/gpu/host1x/bus.c

@@ -41,7 +41,6 @@ static int host1x_subdev_add(struct host1x_device *device,
 			     struct device_node *np)
 {
 	struct host1x_subdev *subdev;
-	struct device_node *child;
 	int err;
 
 	subdev = kzalloc(sizeof(*subdev), GFP_KERNEL);
@@ -56,13 +55,12 @@ static int host1x_subdev_add(struct host1x_device *device,
 	mutex_unlock(&device->subdevs_lock);
 
 	/* recursively add children */
-	for_each_child_of_node(np, child) {
+	for_each_child_of_node_scoped(np, child) {
 		if (of_match_node(driver->subdevs, child) &&
 		    of_device_is_available(child)) {
 			err = host1x_subdev_add(device, driver, child);
 			if (err < 0) {
 				/* XXX cleanup? */
-				of_node_put(child);
 				return err;
 			}
 		}
@@ -90,17 +88,14 @@ static void host1x_subdev_del(struct host1x_subdev *subdev)
 static int host1x_device_parse_dt(struct host1x_device *device,
 				  struct host1x_driver *driver)
 {
-	struct device_node *np;
 	int err;
 
-	for_each_child_of_node(device->dev.parent->of_node, np) {
+	for_each_child_of_node_scoped(device->dev.parent->of_node, np) {
 		if (of_match_node(driver->subdevs, np) &&
 		    of_device_is_available(np)) {
 			err = host1x_subdev_add(device, driver, np);
-			if (err < 0) {
-				of_node_put(np);
+			if (err < 0)
 				return err;
-			}
 		}
 	}