In OTL, Hitler was a "puppet" of the monarchists/authoritarians that they wanted to use to return to power themselves. (That H. would seize the power himself had not been intended.)
What reasons would the ruling Monarchists/Authoritarians of TTL have to hoist H. to power?
A right wing movement could be used by them to counter communist aspirations. But even then, the Nazis would not be the chosen instrument of the Prussian elites, they would look for something like the Stahlhelm.
No, Prussian Junkers and Nazi rabble are incompatible. Hitler hated the Prussians, they dispised him.