mmc: renesas-sdhi: Use priv directly

The dev_get_priv(dev) is used twice in the probe function.
Replace the second invocation with priv variable.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

drivers/mmc/renesas-sdhi.c

@@ -374,7 +374,7 @@ static int renesas_sdhi_probe(struct udevice *dev)
 	ret = tmio_sd_probe(dev, quirks);
 #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
 	if (!ret)
-		renesas_sdhi_reset_tuning(dev_get_priv(dev));
+		renesas_sdhi_reset_tuning(priv);
 #endif
 	return ret;
 }