Is it too late to recommend that you not read any D&D novels? Yeah, probably so.
I still keep copies around of the original Dragonlance Trilogy and the original Salvatore Icewind Dale trilogy. They're not bad. I've also picked up some newer stuff, like Paul S. Kemp's Twilight War trilogy (not bad) a handful of decent Eberron novels, some Don Bassingthwaite books (which I still haven't read yet) and a few others.
If you don't mind unofficial D&D novels, Raymond Feist's Riftwar books, and Simon R. Green's Hawk & Fisher novels feel very much like D&D novels that just don't happen to be licensed. They're pretty good. Some of the Warhammer fiction by Black Library also has a similar feel and is not bad. I recently read the Matthias Thulmann Witch Hunter series (in omnibus format) and it was amongst the best licensed fiction I've read. I've heard even better reports about the Eisenhorn trilogy (which I also have in omnibus format) but that's futuristic, not fantasy.