The logic for checking in nfs41_check_open_stateid() whether the state
is supported by a delegation is inverted. In addition, it makes more
sense to perform that check before we check for expired locks.

Fixes: 8a64c4ef ("NFSv4.1: Even if the stateid is OK,...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>