NFS: Use nfs4_setup_sequence() everywhere

This does the right thing depending on if we have a session, rather than
needing to handle this manually in multiple places.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index b03010e..98cf583 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -332,8 +332,8 @@
 	}
 	nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
 	spin_unlock(&inode->i_lock);
-	nfs41_setup_sequence(nfs4_get_session(server->nfs_client),
-			     &data->args.seq_args, &data->res.seq_res, task);
+	nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
+			    &data->res.seq_res, task);
 }
 
 static void