The ointment you applied contains mupirocin, which is a topical antibiotic helpful for treating superficial bacterial infections. While it may provide some initial relief, pus around the penile ring can indicate a deeper bacterial infection, a fungal infection, or another underlying issue that a topical antibiotic alone might not fully cure. Please keep the area clean by gently washing with warm water and drying it thoroughly, avoiding harsh soaps. I highly recommend consulting a doctor or urologist for a proper evaluation. They can identify the exact cause and prescribe the correct treatment, which may include specific oral antibiotics or antifungal creams.