[POWERPC] Replace kmalloc+memset with kzalloc

Replace kmalloc+memset with kzalloc.

Signed-off-by: Yan Burman <burman.yan@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/smp-tbsync.c b/arch/powerpc/kernel/smp-tbsync.c
index e1970f8..bc892e69 100644
--- a/arch/powerpc/kernel/smp-tbsync.c
+++ b/arch/powerpc/kernel/smp-tbsync.c
@@ -116,8 +116,7 @@
 	printk("Synchronizing timebase\n");
 
 	/* if this fails then this kernel won't work anyway... */
-	tbsync = kmalloc( sizeof(*tbsync), GFP_KERNEL );
-	memset( tbsync, 0, sizeof(*tbsync) );
+	tbsync = kzalloc( sizeof(*tbsync), GFP_KERNEL );
 	mb();
 	running = 1;