net: stmmac: fix dma mapping leak in stmmac_tso_xmit()

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
                    ],
                    "versions": [
                        {
                            "version": "f748be531d7012c456b97f66091d86b3675c5fef",
                            "lessThan": "c5449b635362cb678d29d8f6ab54e65734d891ce",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f748be531d7012c456b97f66091d86b3675c5fef",
                            "lessThan": "8a3257f142ae513d0c96d42f97386d4941bcec29",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f748be531d7012c456b97f66091d86b3675c5fef",
                            "lessThan": "e85adaac3dc6317cae902372c6849189ec62cf7d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f748be531d7012c456b97f66091d86b3675c5fef",
                            "lessThan": "a5d946466a95621fa2769720d59ea336003aa1a5",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
                    ],
                    "versions": [
                        {
                            "version": "4.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }