Take ima_path_check() in nfsd past dentry_open() in nfsd_open()

Signed-off-by: Al Viro <[e-mail]>

fs/nfsd/vfs.c

···
 			    flags, current_cred());
 	if (IS_ERR(*filp))
 		host_err = PTR_ERR(*filp);
+	host_err = ima_path_check(&(*filp)->f_path,
+				  access & (MAY_READ | MAY_WRITE | MAY_EXEC));
 out_nfserr:
 	err = nfserrno(host_err);
 out:
···
 	 */
 	path.mnt = exp->ex_path.mnt;
 	path.dentry = dentry;
-	err = ima_path_check(&path, acc & (MAY_READ | MAY_WRITE | MAY_EXEC));
 nfsd_out:
 	return err? nfserrno(err) : 0;
 }