locks: move locks_free_lock calls in do_fcntl_add_lease outside spinlock

There's no need to call locks_free_lock here while still holding the
i_lock. Defer that until the lock has been dropped.

Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>

diff --cc fs/locks.c
Simple merge