NFS: Don't skip directory entries when doing uncached readdir

Ensure that we initialise desc->cache_entry_index correctly in
uncached_readdir().

Fixes: d1bacf9e ("NFS: add readdir cache array")
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/dir.c

@@ -1042,6 +1042,7 @@ static int uncached_readdir(struct nfs_readdir_descriptor *desc)
 		goto out;
 
 	desc->page_index = 0;
+	desc->cache_entry_index = 0;
 	desc->last_cookie = desc->dir_cookie;
 	desc->duped = 0;