NFSv4.1 cleanup DS stateid error handling

The error handler nfs4_state parameter is never NULL in the pNFS case as
the open_context must carry an nfs_state.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4filelayout.c

@@ -99,16 +99,12 @@ static int filelayout_async_handle_error(struct rpc_task *task,
 	case -NFS4ERR_DELEG_REVOKED:
 	case -NFS4ERR_ADMIN_REVOKED:
 	case -NFS4ERR_BAD_STATEID:
-		if (state != NULL)
-			nfs_remove_bad_delegation(state->inode);
+		nfs_remove_bad_delegation(state->inode);
 	case -NFS4ERR_OPENMODE:
-		if (state == NULL)
-			break;
 		nfs4_schedule_stateid_recovery(mds_server, state);
 		goto wait_on_recovery;
 	case -NFS4ERR_EXPIRED:
-		if (state != NULL)
-			nfs4_schedule_stateid_recovery(mds_server, state);
+		nfs4_schedule_stateid_recovery(mds_server, state);
 		nfs4_schedule_lease_recovery(mds_client);
 		goto wait_on_recovery;
 	/* DS session errors */
@@ -145,7 +141,6 @@ static int filelayout_async_handle_error(struct rpc_task *task,
 	if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0)
 		rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task);
 	goto out;
-
 }
 
 /* NFS_PROTO call done callback routines */