Preheat oven to 350 degrees.
Combine garlic, oregano, avocado oil, mustard, salt and pepper. Mix until blended into a paste.
Use your hand or a spoon to spread the mixture all over the pork.
Place pork roast in baking pan and roast uncovered for about 20 to 30 minutes per a pound. Internal temperature should be between 145 degrees F to 160 degrees F.
Remove from oven once temperature has been reached. Cover loosely with foil for about 10 minutes before slicing.