staging: rtl8723au: rtw_check_bcn_info23a(): Clean up code obfuscation

There is no point doing a double check of the IE, either we found an
WLAN_EID_SSID or we didn't.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>