[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/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index ee0a4e4..d7a756d 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -115,12 +115,10 @@
 {
 	struct iommu_table_cb *parms;
 
-	parms = kmalloc(sizeof(*parms), GFP_KERNEL);
+	parms = kzalloc(sizeof(*parms), GFP_KERNEL);
 	if (parms == NULL)
 		panic("PCI_DMA: TCE Table Allocation failed.");
 
-	memset(parms, 0, sizeof(*parms));
-
 	parms->itc_busno = busno;
 	parms->itc_slotno = slotno;
 	parms->itc_virtbus = virtbus;