LU-16741 llite: rename ptlrpc_req_finished for component llite

LU-16741 llite: rename ptlrpc_req_finished for component llite

Patch renames ptlrpc_req_finished to ptlrpc_req_put for
llite component

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I216aa2797fbebeecae82b1d45301df7a860bde65
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54985
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Patrick Farrell <patrick.farrell@oracle.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>