try this

@api.onchange('your_m2m_field')
def _get_product_domain(self):
    self.ensure_one()
    self.product_id = False
    products = self.your_m2m_field.mapped('product_id').mapped('id') #you rewrite this line as per your requirement
    if products:
        return  {'domain':{'product_id':[('id', 'in', products)]}}
    else:
        return  {'domain':{'product_id':[('id', 'in', [])]}}