NFSv4: Remove bogus "struct nfs_client" argument from decode_ace()

We shouldn't need to force callers to carry an unused argument.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/nfs4xdr.c

@@ -3127,7 +3127,7 @@ static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
 }
 
 /* Dummy routine */
-static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
+static int decode_ace(struct xdr_stream *xdr, void *ace)
 {
 	__be32 *p;
 	unsigned int strlen;
@@ -5075,7 +5075,7 @@ static int decode_rw_delegation(struct xdr_stream *xdr,
 		if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
 				return -EIO;
 	}
-	return decode_ace(xdr, NULL, res->server->nfs_client);
+	return decode_ace(xdr, NULL);
 out_overflow:
 	print_overflow_msg(__func__, xdr);
 	return -EIO;