If the state manager thread fails to start, then we should just mark the
client initialisation as failed so that other processes or threads don't
get stuck in nfs_wait_client_init_complete().
Reported-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Fixes: 4697bd5e ("NFSv4: Fix a race in the net namespace mount notification")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>