LU-9679 lustre: use LIST_HEAD() for local lists.

When declaring a local list head, instead of

   struct list_head list;
   INIT_LIST_HEAD(&list);

use
   LIST_HEAD(list);

which does both steps.

Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: I67bda77c04479e9b2b8c84f02bfb86d9c2ef5671
Reviewed-on: https://review.whamcloud.com/36955
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.super@gmail.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>