Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

Fix a kernel nullptr deref on module
unload when any etnaviv GPU failed to initialize properly.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1561974148.2321.1.camel@pengutronix.de