Mix flour, salt, garlic salt, garlic powder and oregano together in a medium bowl. Add pork chops and toss until well coated.
Heat butter and olive oil in a large frypan over medium heat. Place pork in frypan in a single layer and cook, turning occasionally, until brown on both sides. Add mushrooms and minced garlic; cook and stir briefly.
Stir in wine, scraping the frypan to loosen any brown bits. Cover and simmer over medium heat until pork is tender and sauce is thickened, about 15 minutes. If sauce is too thick, adjust by stirring in a small amount of wine.