staging: r8188eu: move bBusyTraffic update

staging: r8188eu: move bBusyTraffic update

Move the update of bBusyTraffic into the else branch. The if branch ends
with a return statement, so bBusyTraffic will not be updated in this case.

With this change in place, we can reorder the code and save some levels of
indentation.

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20221129205152.128172-4-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>