This type of question comes up fairly frequently, most recently with /u/Platypuskeeper's excellent answer here. The TL:DR is that we really know incredibly little about actual early medieval Scandinavian religion, especially their rites and rituals, or the specifics of cult devotions. We don't even know if the gods who are prominent in what literature we do have were actually ever worshipped at all, or were popular across Scandinavia if they were, while several gods who appear to have been venerated across different sites aren't recorded in literature at all.

TL:DR of that TL:DR: We don't know if any actual early medieval Scandinavians even thought of Loki as a god, let alone worshipped him.