HK to mainland PRC for tourism and back

Hi, I'm an Indian passport holder who will be arriving at HK. I understand that I'm allowed to stay for 14 days in HK. I will be obtaining a Chinese visa to travel to mainland for tourism. My question is, do I need any entry permit to return back to HK from mainland? (Since I already have a HK entry slip). I will be finally departing back to India from Hong Kong airport.
India-->HK-->China-->HK-->India