In modern Irish the adjective would follow rather than precede the noun - so we'd expect the place to be called Lindub rather than Dublin! I've never seen or heard convincing evidence that the order was otherwise, say, 1000 years ago. While I'm no expert on Early Irish (and I am a Dub), I remain agnostic on the name origin for now!

Regards

p.s. Jerry O'Reilly might have something to say on the matter - I'll drop him a line.