Its very likely that hirudora did no damage and let me explain why.
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As you can see in this picture of madara, he has a laid back attitude plus his foot is elevated on a rock. Also if you re read the chapter you will see that we see madara right after the explosion vanishes and the dust somewhat goes away. This means that the whole fight between obito vs kakashi/naruto was not long at all. Just because a chapter was focused on obito fight doesn't mean that madara was out for a while. You have to go by the perception of time that corresponds to the current manga chapter.
Also, there's a difference between getting blasted away and receiving damage and getting blasted away and being unscathed. Just because madara was back a few dozen feet doesn't mean he received any damage. Like I said above if you carefully look at madara he doesn't look like he was really impressed with the move.
People need to realize if hirudora did damage to madara then he would be utterly pissed off. Instead, he is as calm as he always is. Gai got a lucky hit in on a madara that wasn't paying attention to him. It was because he was hit by an abnormally powerful move that his connection to his wood jutsu weakened a little. Even with all this madara wasn't phased one bit. If madara was really damaged then when we seen him on the last page, instead of being in the boss pose he would have laying down completely in the I just got owned pose. But he was in the boss pose paying no attention to bee or gai.