Illusory reality persists after the end of the spell of origin.
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As [Marq][1] wrote in [his answer][2], specific beats general. The illusory reality states that the illusion made real will stay real for a full minute. Unless the object itself is targeted of dispelling it will remain there for the full duration.

Even the fluff description, for whatever is worth, support this: *"you have learned the secret of weaving shadow magic into your illusions to give them a semireality"*. Your ability Illusory Reality sustain the now real object with shadow magic that has nothing to do with the rest of the spell.

  [1]: https://rpg.stackexchange.com/users/26952/marq
  [2]: https://rpg.stackexchange.com/a/130241/41884