I have no position (or knowledge) on his standpoint on semitism, other then that in the deportations he organized, a higher percentage of Jews died then in their native countries. However, a "good name" - we are talking about Vyacheslav Molotov, one of the principal organizers of the catastrophe of collectivization, including partial responsibility for Holodomor. He helped to create the Great Purge, in which millions died. He helped to purge Soviet high command just before the World War II, effectively castrating the army.
So, I do think that Molotov managed to smear his "good name" all by himself.