I am editing this post to make my point more fully.
That's actually a liberal point of view: the liberal believes that the state does have legitimacy, which is derived from the consent and the mandate of the people, and authority provided that it does not overstep that mandate. In a modern democracy, this mandate is the manifesto of the governing party, plus the generally-given right of initative in unforseen circumstances. Beyond that, the liberal believes that any state action - that is, action for which the government has nothing to say that it is channelling the wishes of its electorate, and instead must concede that it is acting from its own motivations - is unjustified and an example of tyranny. This is in contrast to an anarchist, who believes that the state in a representative democracy can never have legitimacy and so never has authority, because the individual citizen is not given the opportunity to consent to its commands, and the anarchist believes that no body has the right to use force to compel an individual to act against his own will.
Indeed, one of the things that seperates a patriot from the nastier breed of nationalist is that the patriot admits the concept of 'patriotic dissent' - for the nationalist, the good and the wishes of the nation come before all other loyalties, so once the will of the nation is established, there is only the 'loyal' and the 'traitorous' course of action. By contrast, a patriotic non-nationalist is able to see that his countrymen are fallible when they express their wishes, and that his right to autonomy and the exercise of his own common sense mean that he does not necessarily need to follow their wishes in order to love his country. In the same way, one can love his father without obeying him unquestioningly (or even at all), and so one can love his country without claiming to 'do as it says'.