LU-15048 quota: check that qti_lqes has been inited

LU-15048 quota: check that qti_lqes has been inited

qti_lqes_resotre_init/fini should check that qti_lqes
has been inited before address qti_lqes_count.

Fix helps against following panic:
qti_lqes_restore_fini()) ASSERTION( qmt_info(env)->qti_lqes_rstr ) failed:

HPE-bug-id: LUS-10239
Change-Id: Ic93d87535f615fe419b2c3a2453506c515837031
Reviewed-on: https://es-gerrit.dev.cray.com/159116
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Shaun Tancheff <stancheff@cray.com>
Tested-by: Elena Gryaznova <c17455@cray.com>
Signed-off-by: Sergey Cheremencev <sergey.cheremencev@hpe.com>
Reviewed-on: https://review.whamcloud.com/45102
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>