I've derma rolled, but just on my face, and only for product absorption. And I self tan.
As you know, you want tanner to stay on the surface of the skin. While it's not dangerous, it's not particularly antioxidant or collagen building. It's derived from sugar which does cause glycation. We don't know what it would or wouldn't do if it got deeper into the skin. It also might look odd.
If I were you and wanted to do both, I wouldn't self tan very soon after dermarolling. I'd wait a few days until healing was totally complete. How deep you roll could have an effect as well.
Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only LOVE can do that. ―Martin Luther King, Jr.