[SCSI] megaraid_sas: combine kmalloc+memset into kzalloc

Use kzalloc rather than kmalloc followed by memset with 0.

Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/megaraid/megaraid_sas_fusion.c

@@ -462,8 +462,8 @@ megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 	 * Allocate the dynamic array first and then allocate individual
 	 * commands.
 	 */
-	fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
-				   *max_cmd, GFP_KERNEL);
+	fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
+				   * max_cmd, GFP_KERNEL);
 
 	if (!fusion->cmd_list) {
 		printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
@@ -471,9 +471,6 @@ megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 		goto fail_cmd_list;
 	}
 
-	memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
-	       *max_cmd);
-
 	max_cmd = instance->max_fw_cmds;
 	for (i = 0; i < max_cmd; i++) {
 		fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),