net/ncsi: Disable the ncsi work before freeing the associated structure

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ncsi/ncsi-manage.c"
                    ],
                    "versions": [
                        {
                            "version": "2d283bdd079c0ad4da020bbc9e9c2a4280823098",
                            "lessThan": "6a921089feeef364169a34a7e5a3968138c00c7f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d283bdd079c0ad4da020bbc9e9c2a4280823098",
                            "lessThan": "64704f231d5dee8639e256507178f43dde1f131c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d283bdd079c0ad4da020bbc9e9c2a4280823098",
                            "lessThan": "f6ca58696749268181f43150b3553f2bafd71e42",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d283bdd079c0ad4da020bbc9e9c2a4280823098",
                            "lessThan": "dd41dab62f32d9e9e0669af8459d12a93834b238",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d283bdd079c0ad4da020bbc9e9c2a4280823098",
                            "lessThan": "a0ffa68c70b367358b2672cdab6fa5bc4c40de2c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ncsi/ncsi-manage.c"
                    ],
                    "versions": [
                        {
                            "version": "4.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.14",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11.3",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }