Retrieving PHYs can defer the probe, do not spawn an error when
-EPROBE_DEFER is returned, it is normal behavior.

Fixes: b1a9edbd ("ata: libahci: allow to use multiple PHYs")
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>