probe: reorganize to avoid some fatal errors
probe: reorganize to avoid some fatal errors

Now we can continue if dsp_enum_nodes fails.

Signed-off-by: Felipe Contreras <de77a8b9cd239b204c19c52ed62e48ab47243362@nokia.com>

maemo-foss/maemo-multimedia-dsp-tools,felipec/dsp-tools,maemo-foss/maemo-multimedia-dsp-tools