I know the stories are very different, but was it about at this point in the series where he was killed, or was it much later?
In the comic, Michonne tortures the Governor for awhile before he is able to find the prison, but after he has already met Rick's group when they come to Woodbury. Once he does find the prison, the Governor makes an assault on the prison, fails, retreats, and then comes back with a tank.
The second assault is a bloody massacre that leaves the prison uninhabitable, and eventually the Governor's group turns on him and kills him.
So he does die in the comic about the same time that he did in the series, although the comic probably didn't go through the plot as quickly as the TV series.