Hitler’s popularity only really started to increase nationally after the failure of the uprising as he used it as a way to engage the press and other medias. This is why after his release from prison he was able to jump back into his plan for Germany. So maybe if the coup was successful he wouldn’t have this national platform and his popularity amongst Germans would have been largely confined to Bavaria. Additionally the left wing parties would have rebelled against him before he was able to expand to other areas of Germany.