LU-3647 llite: cancel open lock before closing file

LU-3647 llite: cancel open lock before closing file

In error handling path of ll_lease_open(), och has already been
freed in ll_close_inode_openhandle() so the sequence of cancel
open lock and close open handle need adjusting.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Change-Id: I02ac654e7ac0dd482a80ede727ea1e90382a5f76
Reviewed-on: http://review.whamcloud.com/7346
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>