net: phy: mscc: Handle devm_phy_package_join() failure in vsc85xx_probe_common()

net: phy: mscc: Handle devm_phy_package_join() failure in vsc85xx_probe_common()

devm_phy_package_join() may fail and return a negative error code.
Update vsc85xx_probe_common() to properly handle this failure by
checking the return value and propagating the error to the caller.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251112135715.1017117-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>