memory: tegra30-emc: 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-v2-10-9eed0ee16b78@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

drivers/memory/tegra/tegra30-emc.c

@@ -979,7 +979,6 @@ static int emc_check_mc_timings(struct tegra_emc *emc)
 static int emc_load_timings_from_dt(struct tegra_emc *emc,
 				    struct device_node *node)
 {
-	struct device_node *child;
 	struct emc_timing *timing;
 	int child_count;
 	int err;
@@ -998,13 +997,11 @@ static int emc_load_timings_from_dt(struct tegra_emc *emc,
 	emc->num_timings = child_count;
 	timing = emc->timings;
 
-	for_each_child_of_node(node, child) {
+	for_each_child_of_node_scoped(node, child) {
 		err = load_one_timing_from_dt(emc, timing++, child);
-		if (err) {
-			of_node_put(child);
+		if (err)
 			return err;
 	}
-	}
 
 	sort(emc->timings, emc->num_timings, sizeof(*timing), cmp_timings,
 	     NULL);