close up shop
To shut a store at the end of a day's business, also, to end a business.
The grocer closes up shop at 5 o'clock.
After 15 years in business at the same spot, the garage closed up shop.
To stop some activity; finish what you are doing.
After camping out for two weeks, the scouts took down their tents and closed up shop.
The committee finished its business and closed up shop.