Pineapple and Pork Tacos with Avocado Crema

Name: Pineapple and Pork Tacos with Avocado Crema
Ingredients: PORK AND PINEAPPLE:; 2 teaspoons sugar; 2 teaspoons ground cumin; 1/2 teaspoon ground coriander; 1/4 teaspoon ground cinnamon; 1/4 teaspoon ground red pepper; 1/4 teaspoon salt; 12 ounces pork tenderloin, trimmed and cut into 1/2 cubes; 1 tablespoon olive oil; 1/4 fresh pineapple, cored and sliced crosswise; 2 tablespoons chopped fresh cilantro; 12 corn tortillas (6 diameter), warmed per package directions; AVOCADO CREMA:; 1 avocado, mashed; 2 tablespoons fat-free sour cream; 2 tablespoons freshly squeezed lime juice; teaspoon salt