method returning same object which was passed as parameter

Is it acceptable practice to pass an object into a method, then return the same object rather than creating a new object inside of the method itself?

As an example: if have an entity class as follows:

class UserDetails {
    int UserID { get; set; }
    string UserName { get; set; }
    string UserAge { get; set; }
}

And then I pass an instance of this class to a method, as follows:

UserDetails UserInfo = new UserDetails();
UserInfo = Get_Details(UserInfo);

Is it reasonable for the method to do the following?

public UserDetails Get_Details(UserDetails user) {
    // SQL Operations...
    user.age = 32;
    return user;
}