staging: rtl8723bs: Resolve the checkpatch error: else should follow close brace '}'

Cleaned up the code to resolve the checkpatch error else should follow
close brace '}' from the following files:

mlme_linux.c
recv_linux.c
sdio_intf.c

Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>