scsi: storvsc: Prefer kcalloc over kzalloc with multiply

Use kcalloc for allocating an array instead of kzalloc with multiply,
kcalloc is the preferred API.

Found with checkpatch.

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Reviewed-by:  K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/storvsc_drv.c

@@ -866,7 +866,7 @@ static int storvsc_channel_init(struct hv_device *device, bool is_fc)
 	 * We will however populate all the slots to evenly distribute
 	 * the load.
 	 */
-	stor_device->stor_chns = kzalloc(sizeof(void *) * num_possible_cpus(),
+	stor_device->stor_chns = kcalloc(num_possible_cpus(), sizeof(void *),
 					 GFP_KERNEL);
 	if (stor_device->stor_chns == NULL)
 		return -ENOMEM;