memory: tegra-mc: simplify with scoped for each OF child loop

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240816-cleanup-h-of-node-put-memory-v2-7-9eed0ee16b78@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

drivers/memory/tegra/mc.c

@@ -450,7 +450,6 @@ static int load_one_timing(struct tegra_mc *mc,
 
 static int load_timings(struct tegra_mc *mc, struct device_node *node)
 {
-	struct device_node *child;
 	struct tegra_mc_timing *timing;
 	int child_count = of_get_child_count(node);
 	int i = 0, err;
@@ -462,14 +461,12 @@ static int load_timings(struct tegra_mc *mc, struct device_node *node)
 
 	mc->num_timings = child_count;
 
-	for_each_child_of_node(node, child) {
+	for_each_child_of_node_scoped(node, child) {
 		timing = &mc->timings[i++];
 
 		err = load_one_timing(mc, timing, child);
-		if (err) {
-			of_node_put(child);
+		if (err)
 			return err;
-		}
 	}
 
 	return 0;
@@ -477,7 +474,6 @@ static int load_timings(struct tegra_mc *mc, struct device_node *node)
 
 static int tegra_mc_setup_timings(struct tegra_mc *mc)
 {
-	struct device_node *node;
 	u32 ram_code, node_ram_code;
 	int err;
 
@@ -485,14 +481,13 @@ static int tegra_mc_setup_timings(struct tegra_mc *mc)
 
 	mc->num_timings = 0;
 
-	for_each_child_of_node(mc->dev->of_node, node) {
+	for_each_child_of_node_scoped(mc->dev->of_node, node) {
 		err = of_property_read_u32(node, "nvidia,ram-code",
 					   &node_ram_code);
 		if (err || (node_ram_code != ram_code))
 			continue;
 
 		err = load_timings(mc, node);
-		of_node_put(node);
 		if (err)
 			return err;
 		break;