David Bowie will have to find another show to haunt. “Life On Mars,” which had a pretty solid start for ABC, is finishing on a low note as the network has made it clear it won’t order any additional episodes past the initial 17. The early decision will allow producers to give the fans who have stuck around to see Sam Tyler — a 2008 cop traversing in 1973 — find closure. “We felt it was the right thing to do for the producers and the fans and creatively,” said Steve McPherson, ABC Entertainment group president, to Television Week. “Life On Mars” — a remake of the short-form British serial starring John Simm in the main role — premiered Oct. 9 to strong ratings with Jason O’Mara in the Sam Tyler role, earning a 7.7/13. It was up against another series premiere that night, “Eleventh …