scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded

[ Upstream commit 4d2b496f ]

map_storep was not being vfree()'d in the module_exit call.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

drivers/scsi/scsi_debug.c

@@ -4993,6 +4993,7 @@ static void __exit scsi_debug_exit(void)
 	if (dif_storep)
 		vfree(dif_storep);
 
+	vfree(map_storep);
 	vfree(fake_storep);
 }