I don’t think you understand. There were two buildings, the embassy and the consulate. The embassy was not directly hit, the consulate was.

https://www.latimes.com/world-nation/story/2024-04-01/syria-says-deadly-israeli-airstrike-destroyed-irans-consular-building-in-damascus

While Iran’s consular building was leveled in the attack, according to Syria’s state news agency, its main embassy building remained intact. Still, the Iranian ambassador’s residence was inside the consular building.

Also looks like the Vienna Convention defines diplomatic missions not the Geneva Convention. My bad.