Legally speaking...
So Kimble was in prison for a murder he didn't commit. He was sentenced to life. He then escapes from prison authorities. Huge manhunt is out for him. While out, he essentially proves his innocence. Even after proving his innocence, legally speaking, Kimble is still a wanted criminal who would likely be prosecuted though.
Kimble technically escaped prison, rightfully so or not...that's still a major crime. The state wouldn't just give him a mulligan on that I wouldn't imagine. He also used forged documents and impersonated a doctor (I know he WAS a doctor but a murder conviction would have stripped him of that). The state spent millions on chasing him down as a fugitive prison escapee. He pointed a gun at a Federal Agent. He resisted arrest. He stole hospital equipment and documents. I think he'd still be looking at quite a few years in prison for a handful of additional crimes, no?