At the beginning please note that my answer is based upon the premise that Christians belong in churches.
Personally, what I would tolerate is vastly dependent upon my situation. As it is now, in which there are churches on every other street corner offering a veritable cornucopia of biblical, theological, and practical perspectives, I can afford to be highly selective. In this case, no, I *would not* attend a church with ordained female deacons.
But if were to live in a different context in which there were churches, but yet churches that line up with what I think is biblical and theologically and practically correct are not to be found, and getting to one that does line up is impracticable, then in that case I'd have to start triaging my convictions and find a church that lines up as closely as possible. In this case, I *might* attend a church with ordained female deacons.
More unpleasant still, imagine I live in a context that is downright hostile to Christianity. Let's say that in this context most churches have either closed or capitulated to the culture so as to be mere religious propagandists for the state, or churches simply don't exist. Let's imagine that within (a workable distance from my home) there is only 1 true church that exists. In this context I *would* attend it with a great deal of toleration for what would surely be the profound perspectival diversity in such a situation.