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Please don't cook it in the Instant Pot. The IP is great for making long-cooking dishes like beans, stews and tough cuts of meat (pork shoulder and beef chuck), but it's not good for tender cuts that are best cooked quickly.
Sprinkle the tenderloin with salt and pepper. Wrap a slice of bacon around it and secure a with a toothpick. Heat a cast iron skillet or heavy-bottomed stainless steel skillet over medium-high heat. Sear the bacon for a couple of minutes on all sides, then sear the meat for a minute or so on each side. Tenderloin should be served medium-rare to medium. Enjoy.