NFSv4: Further cleanups to shutdown loops

Replace the tests for the RPC client being shut down with tests for
whether the nfs_client is in an error state.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

Author: Trond Myklebust

fs/nfs/nfs4proc.c

@@ -9580,7 +9580,7 @@ static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
 		return;
 
 	trace_nfs4_sequence(clp, task->tk_status);
-	if (task->tk_status < 0 && !task->tk_client->cl_shutdown) {
+	if (task->tk_status < 0 && clp->cl_cons_state >= 0) {
 		dprintk("%s ERROR %d\n", __func__, task->tk_status);
 		if (refcount_read(&clp->cl_count) == 1)
 			return;

fs/nfs/nfs4state.c

@@ -1198,7 +1198,7 @@ void nfs4_schedule_state_manager(struct nfs_client *clp)
 	struct rpc_clnt *clnt = clp->cl_rpcclient;
 	bool swapon = false;
 
-	if (clnt->cl_shutdown)
+	if (clp->cl_cons_state < 0)
 		return;
 
 	set_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state);