pmdomain: renesas: rmobile-sysc: Use for_each_child_of_node_scoped()

Use the scoped variant of for_each_child_of_node() to simplify cleanup
handling.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Link: https://lore.kernel.org/r/5e684[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/pmdomain/renesas/rmobile-sysc.c

···
 					 struct device_node *parent,
 					 struct generic_pm_domain *genpd_parent)
 {
-	struct device_node *np;
-
-	for_each_child_of_node(parent, np) {
+	for_each_child_of_node_scoped(parent, np) {
 		struct rmobile_pm_domain *pd;
 		u32 idx = ~0;
 
···
 		}
 
 		pd = kzalloc(sizeof(*pd), GFP_KERNEL);
-		if (!pd) {
-			of_node_put(np);
+		if (!pd)
 			return -ENOMEM;
-		}
 
 		pd->genpd.name = np->name;
 		pd->base = base;