No, it isn't. That is totally incorrect. You need to use "did" in this case.
Ex.:
Where did he go? correct Where do he went? incorrect
What did he do? correct What do he did?/What he did? both are incorrect, but it's not unlikely that you hear people saying "What he did?" when talking. Remember that it's an incorrect usage though, and try to avoid
To Clive: you're totally right, but people who are not native speakers are far more than native speakers. That's why I said that it's not unlikely that he hears it.