Staging: rtl8188eu: core: rtw_security: tidy up crc32_init()

This code generates checkpatch warning:

WARNING: else is not generally useful after a break or return

Moving the declaration to the top of the function we can pull the
code back one tab and it makes it more readable.

Signed-off-by: Merwin Trever Ferrao <merwintf@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190806122849.GA25628@IoT-COE


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