staging: bcm: Removed unnecessary 'else' after 'return' statement in Qos.c

The following patch fixes the checkpatch.pl warning:
WARNING: else is not generally useful after a break or return

Signed-off-by: Esra Altintas <es.altintas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>