Comment # 14 on bug 1173085 from Olav Reinert

(In reply to Takashi Iwai from comment #11)
> You might need to unload realtek kernel module (it's phy driver) beforehand.

The "realtek" module isn't loaded at any time, neither before nor after the
remove+rescan (for which I don't show log entries here, they are the same as
reported earlier):

bb:~ # modinfo realtek
filename:      
/lib/modules/5.3.18-lp152.1.gd4f520d-default/kernel/drivers/net/phy/realtek.ko
license:        GPL
author:         Johnson Leung
description:    Realtek PHY driver
suserelease:    openSUSE Leap 15.2
srcversion:     115992CBFCAF74B6BF13EE3
alias:          mdio:0000000000011100110010??????????
depends:        libphy
retpoline:      Y
intree:         Y
name:           realtek
vermagic:       5.3.18-lp152.1.gd4f520d-default SMP mod_unload modversions 
sig_id:         PKCS#7
signer:         home:tiwai OBS Project
sig_key:        30:4F:31:1F:30:1D:06:03:55:04:03:0C:16:68:6F:6D:65:3A:74:69:
        77:61:69:20:4F:42:53:20:50:72:6F:6A:65:63:74:31:2C:30:2A:06:
        09:2A:86:48:86:F7:0D:01:09:01:16:1D:68:6F:6D:65:3A:74:69:77:
        61:69:40:62:75:69:6C:64:2E:6F:70:65:6E:73:75:73:65:2E:6F:72:
        67:02:09:00:87:F7:87:C1:D0:A0:DB:59
sig_hashalgo:   sha256
signature:      40:38:CF:C4:35:23:DF:DB:54:DE:52:61:0B:04:46:5A:FB:5F:37:02:
        1E:80:0B:3A:D5:95:99:94:7B:FE:35:4F:B3:1B:BA:55:86:A0:4C:3D:
        62:B9:8A:5C:2D:C8:3B:C6:15:67:E1:4D:9A:C2:6E:C2:6C:6A:2A:58:
        8C:F8:8A:97:C7:9D:39:0C:40:11:8E:B2:CC:FC:C2:E2:65:CF:0E:4B:
        3A:83:F5:6B:A6:70:D5:65:BA:28:55:9B:88:5C:F9:33:4A:36:55:FE:
        EC:09:E4:9D:1E:96:B7:CC:06:4C:5D:E6:F2:D4:19:97:AC:1D:8D:EF:
        D5:16:28:4E:DF:37:ED:3C:91:72:B9:2F:FD:82:F1:DA:10:6C:D0:CD:
        80:41:31:B2:04:76:7D:6E:3B:6E:EE:E9:68:3E:7E:14:73:06:E2:AA:
        67:0E:8E:14:F5:E9:67:CC:BA:5F:D4:2B:6C:3F:1D:05:5E:EE:1F:F3:
        99:A7:64:96:41:4D:2E:EE:85:DB:50:F9:62:C4:55:7A:F9:24:63:D1:
        28:CF:C6:AA:84:0A:99:29:8A:44:3E:11:0B:A8:E3:FB:DB:88:F6:B8:
        F2:A0:4F:11:A3:45:0A:99:46:8E:BA:B3:A7:A0:B0:24:8A:0A:9E:9A:
        E8:0B:84:E4:C8:46:4A:60:03:35:D0:17:3E:13:CB:48
bb:~ # rmmod realtek
rmmod: ERROR: Module realtek is not currently loaded
bb:~ # echo 1
>/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.0/0000:03:04.0/0000:06:00.1/remove
bb:~ # rmmod realtek
rmmod: ERROR: Module realtek is not currently loaded
bb:~ # echo 1
>/sys/devices/pci0000:00/0000:00:01.2/0000:02:00.0/0000:03:04.0/rescan
bb:~ # rmmod realtek
rmmod: ERROR: Module realtek is not currently loaded