ubifs: Fix off-by-one error

An inode is allowed to have ubifs_xattr_max_cnt() xattrs, so we must
complain only when an inode has more xattrs, having exactly
ubifs_xattr_max_cnt() xattrs is fine.
With this the maximum number of xattrs can be created without hitting
the "has too many xattrs" warning when removing it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index a0b9b34..842d5f1 100644
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -498,7 +498,7 @@ int ubifs_purge_xattrs(struct inode *host)
 	struct fscrypt_name nm = {0};
 	int err;
 
-	if (ubifs_inode(host)->xattr_cnt < ubifs_xattr_max_cnt(c))
+	if (ubifs_inode(host)->xattr_cnt <= ubifs_xattr_max_cnt(c))
 		return 0;
 
 	ubifs_warn(c, "inode %lu has too many xattrs, doing a non-atomic deletion",