GPU-DRM-TILCDC: Return directly after a failed kfree_table_init() in tilcdc_convert_slave_node()

[SF Markus Elfring]

> I'll pick this up, but with your permission I change
> the commit subject to follow the current convention.

I guess that I can accept the integration of this update suggestion
also with an adjusted prefix in the commit title.   ;-)

Regards,
Markus