r8169: use dev_err_probe in rtl_get_ether_clk

Tiny improvement, let dev_err_probe() deal with EPROBE_DEFER.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/b0c4ebcf-2047-e933-b890-8a20e4bdb19f@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/realtek/r8169_main.c

@@ -5165,8 +5165,8 @@ static int rtl_get_ether_clk(struct rtl8169_private *tp)
 		if (rc == -ENOENT)
 			/* clk-core allows NULL (for suspend / resume) */
 			rc = 0;
-		else if (rc != -EPROBE_DEFER)
-			dev_err(d, "failed to get clk: %d\n", rc);
+		else
+			dev_err_probe(d, rc, "failed to get clk\n");
 	} else {
 		tp->clk = clk;
 		rc = clk_prepare_enable(clk);