Jon's advice is quite good. An alternative is herbes de Provence (if you have any) mixed with fresh minced garlic and crushed peppercorns.
I usually brine pork loins--sometimes a straight brine and sometimes a flavor brine--they make them much more forgiving cook-wise.
If you can roast some garlic it is delicious in a sauce. If you saute diced onion and applein unsalted butter, as Jon suggests, with some thyme and a pinch of sage, till the onion is soft and browned in spots, then add stock (I'd go with one part beef to 2 parts chicken), then simmer till well-blended, you can thicken with the roasted garlic. One apple (Granny Smith, say) and two medium onions with 2 t of thyme, a 1/4 t of sage should do it. For the stock, 1/2 c beef plus 1 c chicken. Three heads of roasted garlic squeezed in at the finish. Puree in a blender with a dash of heavy cream. Return to the stove at a simmer and add the collected juices from your roast after resting. Simmer, if needed, to thicken further.
Have a great dinner, Paul. Sounds like you will.