Does voldmart die in Harry Potter?

Yes 9 times because Lord Voldemort had seven Horcruxes of his soul which were:

1. The Diary.
2. Marvolo Gaunt's Ring.
3. Salazar Slytherin's Locket.
4. Helga Hufflepuff's Cup.
5. Rowena Ravenclaw's Diadem.
6. Harry Potter (unknown to Voldemort until after he had destroyed it).
7. Nagini the Snake.

He died a bit when each of these was destroyed.

He also retained part of his soul inside him (8) which died when he fought Harry at at the end of the story.

Then (9) he also died first the first time when he tried to kill Harry Potter as a baby.