I don't know what your phase 2 diet is, as post op diets and progressions vary all over the map, but things like tuna salad and flakey fish were on our initial diet out of the hospital, so it is unlikely to have done any harm if you aren't feeling anything bad going on. We had a lot of freedom to move between liquids, mushies and soft things at will that first month, with the general rule being to try things one at a time to test for tolerance and if something didn't settle right, then skip that for a couple weeks and try it again. Some programs, on the other hand, are very cookie cutter and hold everyone back to the lowest common denominator so that no one has a "bad" experience, other than being on a liquid diet a lot longer than necessary for them.
If you aren't feeling bad, I wouldn't bother calling, but I would 'fess up to the doc when you see them next, let them know that you goofed and didn't feel bad, and didn't do it again. This is feedback that they can use, as often they don't really know how fast they can progress their diets - I have seen some come through here saying that their doc advanced them ahead of the published schedule, and when asked why, they were told that they had found patients cheating on the diet and not suffering from it, so they advanced the progression, and the guidebook will be updated next time they print some.