cxgb3: Fix mss table initialization

Fix the HW SMT table initialization to avoid random
mss miscomputations for offload connections.
Signed-off-by: NDivy Le Ray <divy@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/cxgb3/cxgb3_main.c

@@ -443,6 +443,7 @@ static int init_tp_parity(struct adapter *adap)
 		memset(req, 0, sizeof(*req));
 		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
 		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i));
+		req->mtu_idx = NMTUS - 1;
 		req->iff = i;
 		t3_mgmt_tx(adap, skb);
 		if (skb == adap->nofail_skb) {