Is Buddha a source of suffering? Buddha said he taught only the suffering , origin of suffering , cessation of suffering and path to cessation of suffering. 
He also said whatever arises must perish and that is why whatever arises is a source of suffering. 
However Buddha arises too. 

Therefore is it correct to say that Buddha is also a source of suffering?
The Buddha is a source of suffering if you cling to his form, but not his teachings. By understanding the Buddha's teachings, you understand what is great and important about him. His form or voice or personality is not considered as great or important as his teachings.

Even his teachings (the Dhamma) are meant to be a raft that carries one to the other shore (Nibbana) but one should not cling to it, as one might cling to a raft after crossing the river.

From the Vakkali Sutta:


  "For a long time, Lord, I have wanted to come and set eyes on the
  Blessed One, but I had not the strength in this body to come and see
  the Blessed One."
  
  "Enough, Vakkali! What is there to see in this vile body? He who sees
  Dhamma, Vakkali, sees me; he who sees me sees Dhamma. Truly seeing
  Dhamma, one sees me; seeing me one sees Dhamma."