If that is the case - don't do that anymore.
Park bike on centerstand, or, if it must go on the sidestand immediately after running, be sure you have solid footing and tip the bike to the right side (after shutting off engine) as far as you can manage and hold it for 10 seconds - this helps to drain oil out of the left rocker area down the pushrod tubes and into the crankcase. Then, park bike on sidestand.
Or, park bike first on centerstand for 10 minutes or so, then switch to sidestand.
If the above doesn't take care of the problem, and smoke persists for more than ~ 10 seconds or so after starting up, then we can look into other causes.
Enjoy!