net: phy: realtek: clear 1000Base-T link partner advertisement

Clear 1000Base-T link partner advertisement bits in Clause-45
read_status() function in case auto-negotiation is disabled or has not
been completed.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/9dc9b47b2d675708afef3ad366bfd78eb584d958.1728565530.git.daniel@makrotopia.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/phy/realtek.c

@@ -1026,6 +1026,10 @@ static int rtl822x_c45_read_status(struct phy_device *phydev)
 	if (ret < 0)
 		return ret;
 
+	if (phydev->autoneg == AUTONEG_DISABLE ||
+	    !genphy_c45_aneg_done(phydev))
+		mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, 0);
+
 	/* Vendor register as C45 has no standardized support for 1000BaseT */
 	if (phydev->autoneg == AUTONEG_ENABLE) {
 		val = phy_read_mmd(phydev, MDIO_MMD_VEND2,