No. Revan was always a mass murderer. He always kills though for patriotism. He went to war with the Mandalorians and killed them for the Republic. Discovered the Sith Empire from Mandalore the Ultimate and was brainwashed by the Sith Emperor to destroy the Republic. He resisted the Empire but ended up killing key people and destroying the Republic Military to take control of the corrupt Republic.He is stopped and reprogrammed with a new identity or returned to his old identity of wanting to wage war to protect the Republic that presents itself in the form of Darth Malak. Then, he seeks to kill the Emperor to save the Republic for good, gets captured again and seeks to just delay the Emperor from going to war. When that doesn't work and is freed partially because the Republic frees him and partially because the Emperor wants to find the Foundry. Revan seeks to kill the Emperor
out of a patriotic desire to save the Republic, which has always been his modus operandi, and is a result of being slightly brainwashed by the Sith Emperor again. That is extremely clear.