LU-5305 ldlm: fix a use after free in ldlm_resource_get()

LU-5305 ldlm: fix a use after free in ldlm_resource_get()

If lvbo initialization has failed then save the return status (from
lr_lvb_len) before putting the resource.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I2d36adcf85f24d5347279e7809bc571a56d87f1e
Reviewed-on: http://review.whamcloud.com/11017
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>