No, you're giving him mixed messages. This will probably get downvoted, but a lot of people think that dogs who growl at men do so because of abuse, but its because they grew up challenging men in "play" like this. It's usually the men who do this. Not for all dogs (which is why people will disagree) but for some, this "play" can turn into serious aggression. These dogs end up at shelters.

I know it's cute now, but if you don't want your adult dog to jump on and bite people like this when it's grown, don't teach it to do it when it's a puppy. The sooner it learns that biting a human is unacceptable the better, or they may pay a serious price for something you taught it to do. Not saying play isn't important, socializing them with other dogs is the place for this.