It's very hard to say. When your body is significantly dependent on benzos, and they are withdrawn, you don't have enough GABA to offset glutamate, which can cause anything from very minor problems to fullblown seizures. If you didn't have any seizures and tinnitus seems to be your only significant problem that's a good sign -- it might go away completely. Even if it does, it might take a couple years to do so, though. There's not much point in obsessing over whether it will or won't go; try to get decent sleep, eat well, exercises, yoga/meditation/whatever, and then just let it do its thing... easier said than done, I know!