realtek: pcs: rtl838x: set mode after patching

In order to have a unified SerDes setup sequence, align RTL838x to all
other variants. Set the mode after patching has been applied. Testing on
devices showed the order is rather irrelevant.

Link: https://github.com/openwrt/openwrt/pull/23741
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>

target/linux/realtek/files-6.18/drivers/net/pcs/pcs-rtl-otto.c

@@ -939,15 +939,15 @@ static int rtpcs_838x_setup_serdes(struct rtpcs_serdes *sds,
 	rtpcs_sds_write(sds, 0x0, 0x0, 0xc00);
 	rtpcs_sds_write(sds, 0x0, 0x3, 0x7146);
 
+	rtpcs_838x_sds_patch(sds, hw_mode);
+	rtpcs_838x_sds_reset(sds);
+
 	ret = rtpcs_838x_sds_set_mode(sds, hw_mode);
 	if (ret)
 		return ret;
 
 	sds->hw_mode = hw_mode;
 
-	rtpcs_838x_sds_patch(sds, hw_mode);
-	rtpcs_838x_sds_reset(sds);
-
 	/* release reset */
 	rtpcs_sds_write(sds, 0, 3, 0x7106);