LU-12790 obdclass: print jobid error message properly

LU-12790 obdclass: print jobid error message properly

Modify unlikely() condition to print error message properly when
(rc == -EOVERFLOW).

Lustre-change: https://review.whamcloud.com/36272
Lustre-commit: df21a3b9eb01621de92940e441cd557913d1cd05

Signed-off-by: Emoly Liu <emoly@whamcloud.com>
Change-Id: I19bfb353c71b55a0dfb6eec78c1af915494acd71
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/36378
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>