net: cpsw_new: Fix unnecessary netdev unregistration in cpsw_probe() error path

net: cpsw_new: Fix unnecessary netdev unregistration in cpsw_probe() error path

The current error handling in cpsw_probe() has two issues:
- cpsw_unregister_ports() may be called before cpsw_register_ports() has
  been executed.

- cpsw_unregister_ports() is already invoked within cpsw_register_ports()
  in case of a register_netdev() failure, but the error path would call
  it again.

Fixes: ed3525eda4c4 ("net: ethernet: ti: introduce cpsw switchdev based driver part 1 - dual-emac")
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://patch.msgid.link/20260205-cpsw-error-path-v1-1-6e58bae6b299@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>