Each and every surgical intervention bears some risk of complications and deviated septum surgery is no different. In general, you have minimal risks of bleeding, infection, and your body may not react well to anesthesia. All of these risks are very small and if the procedure is done correctly, you shouldn’t expect to see any of them.
In any case, the number of benefits greatly exceeds the number of risks. So, if for whatever reason you need a nose job, you should do it as early as possible.