Note that the crown race was also on the wrong way before disassembly. To correct it you should:
1. Take the crown race off
2. Put plenty of grease on the steerer tube
3. Put the crown race back on upside down
4. Slip a PVC pipe (approximately same diameter as crown race and a little longer than the steerer tube) over the steerer.
5. Hammer down the PVC pipe with a rubber mallet to jam the crown race tight onto the fork crown
6. Remove PVC pipe and install fork

But I wonder if there's a reason it was on the wrong way...maybe it doesn't fit the fork? In other words, is it possible that this headset isn't compatible with this fork? As someone said these things aren't well standardized so there's no way to know for sure until you try it.