With the suggestion of @ActionAndi you are almost half way. But the last step Line to Polygon throws an error (Execute failed: ‘_ExecutionContext’ object has no attribute ‘logger’ ) , because around Malaga (Spain) the line crossed itself .
So I changed the the longitude coordinates from the second point. And then it works
See this wf: geocoding_points_to_polygon.knwf (64.8 KB)
Gr. Hans