arm/km: fix wrong error handling

miiphy_read and miiphy_write are returning 0 on success.
Signed-off-by: NHolger Brunck <holger.brunck@keymile.com>
Acked-by: NValentin Longchamp <valentin.longchamp@keymile.com>

board/keymile/km_arm/km_arm.c

@@ -318,15 +318,15 @@ void reset_phy(void)
 		return;
 
 	/* RGMII clk transition on data stable */
-	if (!miiphy_read(name, CONFIG_PHY_BASE_ADR, PHY_SPEC_CTRL_REG, &reg))
+	if (miiphy_read(name, CONFIG_PHY_BASE_ADR, PHY_SPEC_CTRL_REG, &reg))
 		printf("Error reading PHY spec ctrl reg\n");
-	if (!miiphy_write(name, CONFIG_PHY_BASE_ADR, PHY_SPEC_CTRL_REG,
-		reg | PHY_RGMII_CLK_STABLE | PHY_CLSA))
+	if (miiphy_write(name, CONFIG_PHY_BASE_ADR, PHY_SPEC_CTRL_REG,
+			 reg | PHY_RGMII_CLK_STABLE | PHY_CLSA))
 		printf("Error writing PHY spec ctrl reg\n");
 
 	/* leds setup */
-	if (!miiphy_write(name, CONFIG_PHY_BASE_ADR, PHY_LED_SEL_REG,
-		PHY_LED0_LINK | PHY_LED1_ACT | PHY_LED2_INT))
+	if (miiphy_write(name, CONFIG_PHY_BASE_ADR, PHY_LED_SEL_REG,
+			 PHY_LED0_LINK | PHY_LED1_ACT | PHY_LED2_INT))
 		printf("Error writing PHY LED reg\n");
 
 	/* reset the phy */