Exit from saudi to bahrain cause way..

I was working with one of the company in Alkhobar, KSA. Now i am going on final exit. then i was hired in Bahrain.
Can i exit in Saudi using Bahrain Causeway or i must take a flight dammam to bahrain? or do i need to exit on my point of entry?? which is possible and best solution??..

You can go on a final exit through Bahrain if you have an outward connection.