You cannot be sure whether Iran has got these missiles yet.Their Kilo class subs well need to have their torpedo tubes modified to carry these missiles.That's not very simple for the Iranians to do.
Traditionally, that's the only good news in this entire story.
Muslims are totally incapable of maintaining hi-tech machinery of any kind, for any length of time.
That suggests that, if they get the missiles, they better use them quickly, or make sure that they have Russian or Chinese technicians on hand to do the maintenance.
This reminds me of the first hand story I heard from a friend working in Egypt in the 70s. Two hundred new school buses were "donated" by the US.
Within one year 50% were inoperative, and within 3 all of them were parked.