AMP web page comes with required link relation attribute. Just ensure about the following things.
rel="amphtml" It should be pointed to specific AMP page of a web page
rel="canonical" It should same as main version URL
If you would install WordPress Official Plugin, its permalink will go like this.
So, there is no chance of multiple redirections.
Well, I was one who faced the issue which you have mentioned. I believe it was a rare case.