Description: usb: mtu3: fix list_head check warning
References:
Notes:
 carnil> Introduced in 83374e035b62 ("usb: mtu3: add tracepoints to help debug").
 carnil> Vulnerable versions: 5.2-rc1.
Bugs:
upstream: released (5.16-rc8) [8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bf]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.90) [3b6efe0b7ba03cc2acf0694b46d6ff33c5b4c295]
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (5.15.15-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: released (5.10.92-1)
4.19-buster-security: N/A "Vulnerable code not present"