Would you call this violation?

[Coach Bill]

Sideline out-of-bounds in the backcourt. Player inbounds the ball to his teammate and then runs up the sideline out-of-bounds about 15-20 feet and then comes on the court. He passed behind the official as he was running up the sideline out-of-bounds. Did the official hand him the ball on the wrong side?

I thought it should have been called, but not really a big advantage gained. They were walking the ball up the court.