[SCSI] pmcraid: pmcraid_chr_ioctl uses incorrect argument order to kmalloc()

Size is 1st arg, not second.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/pmcraid.c

@@ -4102,7 +4102,7 @@ static long pmcraid_chr_ioctl(
 	struct pmcraid_ioctl_header *hdr = NULL;
 	int retval = -ENOTTY;
 
-	hdr = kmalloc(GFP_KERNEL, sizeof(struct pmcraid_ioctl_header));
+	hdr = kmalloc(sizeof(struct pmcraid_ioctl_header), GFP_KERNEL);
 
 	if (!hdr) {
 		pmcraid_err("faile to allocate memory for ioctl header\n");