Staging: bcm: fix possible NULL dereference of psfLocalSet in CmHost.c

Variable psfLocalSet may not follow the correct
path in the code, and therefore may not be set
properly. As such, causing a null dereference.

Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>