1 pork tenderloin (about 1.5 pounds)
1 teaspoon garlic powder
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon dried rosemary
1 teaspoon dried sage
2 tablespoons olive oil
1 cup chicken broth
2 tablespoons Dijon mustard
2 tablespoons butter
1/4 cup white wine
1/2 cup heavy cream
1 tablespoon all-purpose flour
1 teaspoon fresh thyme, chopped
1 tablespoon fresh parsley, chopped