egl/platform/drm: Don't take display ownership until gbm is initialized

If the gbm_create_device() call here actually did fail, any subsequent
eglTerminate on the display would segfault.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
1 file changed