bnxt_en: Fix a VXLAN vs GENEVE issue

Knowing that:
  #define TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_VXLAN        (0x1UL << 0)
  #define TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_GENEVE       (0x5UL << 0)
and that 'bnxt_hwrm_tunnel_dst_port_alloc()' is only called with one of
these 2 constants, the TUNNEL_DST_PORT_ALLOC_REQ_TUNNEL_TYPE_GENEVE can not
trigger.

Replace the bit test that overlap by an equality test, just as in
'bnxt_hwrm_tunnel_dst_port_free()' above.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -3210,11 +3210,17 @@ static int bnxt_hwrm_tunnel_dst_port_alloc(struct bnxt *bp, __be16 port,
 		goto err_out;
 	}
 
-	if (tunnel_type & TUNNEL_DST_PORT_ALLOC_REQ_TUNNEL_TYPE_VXLAN)
+	switch (tunnel_type) {
+	case TUNNEL_DST_PORT_ALLOC_REQ_TUNNEL_TYPE_VXLAN:
 		bp->vxlan_fw_dst_port_id = resp->tunnel_dst_port_id;
-
-	else if (tunnel_type & TUNNEL_DST_PORT_ALLOC_REQ_TUNNEL_TYPE_GENEVE)
+		break;
+	case TUNNEL_DST_PORT_ALLOC_REQ_TUNNEL_TYPE_GENEVE:
 		bp->nge_fw_dst_port_id = resp->tunnel_dst_port_id;
+		break;
+	default:
+		break;
+	}
+
 err_out:
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;