Bro, there are several home remedies like keeping it near running TV or PC(so heat coming out from them will help in drying out), but in my opinion visit your nearest service center and get it checked..
NOTE: DON'T KEEP YOUR PHONE UNDER DIRECT SUNLIGHT..OR NEAR DIRECT HEAT
Bro, frankly speaking, I don't know what tools or procedure they will gonna use to remove camera moisture.. or keep your device near hot place for few hours or overnight..and see if their is any relief..(but not in direct contact)
well I know about these they will use heat gun to soften the adhesive of the back panel and then they will use prying tool to pry out the adhesive from back and then they will dry out the camera . so this is the method they are going to use .
Don't use hairdryer. let it dry for a few days, not in direct sunlight though. You can use one of those pouches that come inside water bottles to absorb moisture or else you can keep your phone in rice for a couple of days.