powerpc: Coding style cleanups

While converting code to use for_each_node_by_type I noticed a
number of coding style issues.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 00cc090..0bfb90c 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -709,7 +709,6 @@
 
 static int __init parse_numa_properties(void)
 {
-	struct device_node *cpu = NULL;
 	struct device_node *memory;
 	int default_nid = 0;
 	unsigned long i;
@@ -732,6 +731,7 @@
 	 * each node to be onlined must have NODE_DATA etc backing it.
 	 */
 	for_each_present_cpu(i) {
+		struct device_node *cpu;
 		int nid;
 
 		cpu = of_get_cpu_node(i, NULL);
@@ -800,8 +800,9 @@
 	}
 
 	/*
-	 * Now do the same thing for each MEMBLOCK listed in the ibm,dynamic-memory
-	 * property in the ibm,dynamic-reconfiguration-memory node.
+	 * Now do the same thing for each MEMBLOCK listed in the
+	 * ibm,dynamic-memory property in the
+	 * ibm,dynamic-reconfiguration-memory node.
 	 */
 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
 	if (memory)