Staging: bcm: Moved doubled if-block

This patch moves the doubled if block inside the retval-checking one
level up.

As the if-else-block it was in is now a one-statement if-else block,
I removed the braces from it.

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>