NFSv4: Reduce the stack footprint of nfs4_remote_referral_get_sb

	struct super_block *s;

	struct nfs_server *server;

	struct dentry *mntroot;

	struct nfs_fh mntfh;

	struct nfs_fh *mntfh;

	int (*compare_super)(struct super_block *, void *) = nfs_compare_super;

	struct nfs_sb_mountdata sb_mntdata = {

		.mntflags = flags,

	};

	int error;

	int error = -ENOMEM;

	dprintk("--> nfs4_referral_get_sb()\n");

	mntfh = nfs_alloc_fhandle();

	if (mntfh == NULL)

		goto out_err_nofh;

	/* create a new volume representation */

	server = nfs4_create_referral_server(data, &mntfh);

	server = nfs4_create_referral_server(data, mntfh);

	if (IS_ERR(server)) {

		error = PTR_ERR(server);

		goto out_err_noserver;

		nfs_fscache_get_super_cookie(s, NULL, data);

	}

	mntroot = nfs4_get_root(s, &mntfh);

	mntroot = nfs4_get_root(s, mntfh);

	if (IS_ERR(mntroot)) {

		error = PTR_ERR(mntroot);

		goto error_splat_super;

	security_sb_clone_mnt_opts(data->sb, s);

	nfs_free_fhandle(mntfh);

	dprintk("<-- nfs4_referral_get_sb() = 0\n");

	return 0;

out_err_nosb:

	nfs_free_server(server);

out_err_noserver:

	nfs_free_fhandle(mntfh);

out_err_nofh:

	dprintk("<-- nfs4_referral_get_sb() = %d [error]\n", error);

	return error;

		bdi_unregister(&server->backing_dev_info);

error_splat_bdi:

	deactivate_locked_super(s);

	nfs_free_fhandle(mntfh);

	dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);

	return error;

}