LU-12511 ldlm: free resource when ldlm_lock_create() fails.

LU-12511 ldlm: free resource when ldlm_lock_create() fails.

ldlm_lock_create() gets a resource, but don't put it on
all failure paths. It should.

Change-Id: Ib49bcafdeac834c412adad9db135034d1ea06a04
Signed-off-by: Mr. NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-on: https://review.whamcloud.com/45585
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Olaf Faaland-LLNL <faaland1@llnl.gov>
Reviewed-by: Andriy Skulysh <andriy.skulysh@hpe.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>