NFSv4: Don't remove the delegation from the super_list more than once

Add a check to ensure that we haven't already removed the delegation
from the inode after we take all the relevant locks.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2019-10-21 14:12:13 -04:00
commit f9e0cc9c97