net: dsa: realtek: rtl8365mb: use ERR_PTR

net: dsa: realtek: rtl8365mb: use ERR_PTR

Convert numeric error codes into human-readable strings by using %pe
together with ERR_PTR() in dev_err() messages.  Also use dev_err_probe()
instead of checking for -EPROBE_DEFER.

Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://patch.msgid.link/20260606-realtek_forward-v13-1-b9e409687cbe@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>