staging: r8188eu: refactor rtw_usb_bulk_size_boundary()

staging: r8188eu: refactor rtw_usb_bulk_size_boundary()

Using ternary operator to set a variable to true or false is not
needed. Convert two such uses of ternary operator in
rtw_usb_bulk_size_boundary() to just use the condition and return the
value directly instead of using a return variable. This shortens the
code and improves readability. While at it, remove an unneeded line
break from the function head.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220329103756.6740-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>