staging: lustre: lnet: Use list_entry() rather than container_of()

Use list_entry() rather than container_of() for nodes of doubly linked
lists.
Semantic patch used:

@A exists@
identifier var;
struct list_head *ptr;
@@

  var =
- container_of
+ list_entry
  (ptr, ...);
Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c

@@ -113,7 +113,7 @@ kiblnd_get_idle_tx(lnet_ni_t *ni, lnet_nid_t target)
 	node = kiblnd_pool_alloc_node(&tps->tps_poolset);
 	if (!node)
 		return NULL;
-	tx = container_of(node, kib_tx_t, tx_list);
+	tx = list_entry(node, kib_tx_t, tx_list);
 
 	LASSERT(!tx->tx_nwrq);
 	LASSERT(!tx->tx_queued);