sunrpc: handle SVC_GARBAGE during svc auth processing as auth error

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sunrpc/svc.c"
                    ],
                    "versions": [
                        {
                            "version": "29cd2927fb914cc53b5ba4f67d2b74695c994ba4",
                            "lessThan": "599c489eea793821232a2f69a00fa57d82b0ac98",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "29cd2927fb914cc53b5ba4f67d2b74695c994ba4",
                            "lessThan": "353e75b55e583635bf71cde6abcec274dba05edd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "29cd2927fb914cc53b5ba4f67d2b74695c994ba4",
                            "lessThan": "c90459cd58bb421d275337093d8e901e0ba748dd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "29cd2927fb914cc53b5ba4f67d2b74695c994ba4",
                            "lessThan": "94d10a4dba0bc482f2b01e39f06d5513d0f75742",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9b59f5c4911e87264507e0934cd2bb277390c560",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.3.4",
                            "lessThan": "6.4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sunrpc/svc.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.95",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.35",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.4",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }