LU-9334 lfsck: object leak in lfsck_load_one_trace_file

LU-9334 lfsck: object leak in lfsck_load_one_trace_file

In lfsck_load_one_trace_file(), if we successfully load or
create the object via local_index_find_or_create(), but the
subsequent do_index_try() failed, then we need to release
such object, otherwise it will be left there.

Signed-off-by: Fan Yong <fan.yong@intel.com>
Change-Id: Ic3c7db9239e0d10a5cf6fc2254a4c414f4cd007f
Reviewed-on: https://review.whamcloud.com/26703
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>