[POWERPC] arch/powerpc/kernel: Use for_each_child_of_node

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 3b70844..fd5ae8d 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -172,7 +172,7 @@
 
 	root = of_find_node_by_path("/");
 
-	for (child = NULL; (child = of_get_next_child(root, child)); ) {
+	for_each_child_of_node(root, child) {
 		if (!of_match_node(matches, child))
 			continue;