scsi: megaraid: Fix ifnullfree.cocci warnings

NULL check before vfree is not needed.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2012111113060.2669@hadrienReported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/megaraid/megaraid_sas_fusion.c

@@ -3920,8 +3920,7 @@ megasas_free_host_crash_buffer(struct megasas_instance *instance)
 {
 	unsigned int i;
 	for (i = 0; i < instance->drv_buf_alloc; i++) {
-		if (instance->crash_buf[i])
-			vfree(instance->crash_buf[i]);
+		vfree(instance->crash_buf[i]);
 	}
 	instance->drv_buf_index = 0;
 	instance->drv_buf_alloc = 0;