net: phy: fixed_phy: print gpio error only if gpio node is present

It is perfectly ok to not have an gpio attached to the fixed-link node. So
the driver should not throw an error message when the gpio is missing.

Fixes: 5468e82f7034 ("net: phy: fixed-phy: Drop GPIO from fixed_phy_add()")
Signed-off-by: Hubert Feurstein <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/phy/fixed_phy.c

···
 	if (IS_ERR(gpiod)) {
 		if (PTR_ERR(gpiod) == -EPROBE_DEFER)
 			return gpiod;
-		pr_err("error getting GPIO for fixed link %pOF, proceed without\n",
-		       fixed_link_node);
+
+		if (PTR_ERR(gpiod) != -ENOENT)
+			pr_err("error getting GPIO for fixed link %pOF, proceed without\n",
+			       fixed_link_node);
 		gpiod = NULL;
 	}