anv: Better handle return codes from anv_physical_device_init

anv: Better handle return codes from anv_physical_device_init

The case where we just want the loop to continue is INCOMPATIBLE_DRIVER
because that simply means that whatever FD we opened isn't a supported
Intel chip.  Other error codes such as OUT_OF_HOST_MEMORY are actual errors
and we should be returning early in that case.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>