An Innocent Man (1989) on Netflix

Jimmie Rainwood is an ordinary man whose life is turned upside down when two (corrupt) cops, who took down the wrong address, bursts into his house, thinking that there would be drugs. To cover themselves up, they place a gun in Rainwood's hand and drugs all over his house. The fact that it's his word against two cops and that also the prosecution used some small indiscretions from his past to make him look bad, Rainwood is found guilty and sentenced to six years in prison. Rainwood tries to make the best of it, but when one of the cons sets his sights on Rainwood, Rainwood is told by one of con's rivals that he has to take out the con before he does anything serious to Rainwood. After being beaten up and witnessing just how sadistic the con is, Rainwood takes him out with help from Virgil, a con who's in prison because of the two cops who framed Rainwood. Rainwood's paroled after three years, and tries to get on with his life but the two cops who framed, are worried that Rainwood might come after them so they warn Rainwood not to do anything. And that inspires him to go after them with Virgil's help.