staging: r8188eu: refactor rtw_inc_and_chk_continual_urb_error()

Refactor rtw_inc_and_chk_continual_urb_error(). Return directly
instead of using a return variable and initialize the variable 'value'
at declaration. This shortens the code and improves readability.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220329103756.6740-3-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>