[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/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 47dc754..14e300f 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -276,11 +276,11 @@
 static struct device_node *scan_OF_for_pci_dev(struct device_node *parent,
 					       unsigned int devfn)
 {
-	struct device_node *np = NULL;
+	struct device_node *np;
 	const u32 *reg;
 	unsigned int psize;
 
-	while ((np = of_get_next_child(parent, np)) != NULL) {
+	for_each_child_of_node(parent, np) {
 		reg = of_get_property(np, "reg", &psize);
 		if (reg == NULL || psize < 4)
 			continue;