ovl: do not copy attr several times

In ovl_xattr_set() we have already copied attr of real inode
so no need to copy it again in ovl_posix_acl_xattr_set().

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/overlayfs/super.c

@@ -1052,9 +1052,6 @@ ovl_posix_acl_xattr_set(const struct xattr_handler *handler,
 	}
 
 	err = ovl_xattr_set(dentry, inode, handler->name, value, size, flags);
-	if (!err)
-		ovl_copyattr(ovl_inode_real(inode), inode);
-
 	return err;
 
 out_acl_release: