Preheat the oven broiler; set an oven rack about 6 inches from the heat source. Line a jelly roll pan with aluminum foil; spray with nonstick cooking spray.
Place garlic and olive oil in a small microwave-safe bowl. Cook on high in the microwave for 1 1/2 minutes. Melt butter in a saucepan over low heat; stir in garlic mixture. Remove from heat; stir in white wine, Worcestershire sauce, lemon juice, fines herbes, black pepper, and garlic salt.
Place salmon fillets skin-side down on the prepared pan. Spoon about 1/3 of the butter sauce over fillets; sprinkle evenly with fresh dill.
Broil in the preheated oven for 3 minutes. Turn fillets so that a side faces up and baste fillets with about 1/3 of the butter sauce; broil for 3 minutes. Turn fillets so the opposite side faces up and baste with remaining butter sauce; broil until fillets flake easily with a fork, about 3 more minutes.