You're going to have to give us the whole sentence and the context. However, at first sight, I see nothing wrong with the phrase in your title.
"He is damned for all eternity, like his damned father."
Of course, it would make more sense to say "He is damned for all eternity, like his father" but even so, it is just possible. "Damned" is still an adjective. The noun is "father".
A far more likely phrase would be:
He is a burglar, just like his damn father!
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