No, reporting the stolen gun to the authorities demonstrates a level of concern equal to that of a person who wants the gun recovered to minimize harm to the community. Liability then falls onto the person currently in possession of the gun at the time of the crime.
If your gun is used in a crime, the gun will be held during the entire duration of the investigation of the crime, the court proceedings or longer. This timeframe can be dependent on the type of crime, the initial court proceeding and any appellate process.