Doubt In Sujood As Sahu

Assalamu alaikum warahmatullahi wa barakatuh

So I prayed Asr and while doing it had doubt on whether I did 2nd rakat tashahud , but ignored it. I then made a mistake in ruku so offered sujood as sahu for it. But now I'm thinking I missed the tashahud so should I offer sujood as sahu again?