UBUNTU: SAUCE: NFSv4: Ensure that the LOCK code sets exception->inode

UBUNTU: SAUCE: NFSv4: Ensure that the LOCK code sets exception->inode

BugLink: http://bugs.launchpad.net/bugs/974664

All callers of nfs4_handle_exception() that need to handle
NFS4ERR_OPENMODE correctly should set exception->inode

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org [>= 3.3.1]
(cherry picked from commit 487790f27df9bb27d3400486bd021dd59edc7589 git://git.linux-nfs.org/projects/trondmy/linux-nfs.git)

Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>