PCI: dwc: ep: Flush cached MSI write before unmapping the iATU

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/pci/controller/dwc/pcie-designware-ep.c",
                        "drivers/pci/controller/dwc/pcie-designware.h"
                    ],
                    "versions": [
                        {
                            "version": "468711a40d5dfc01bf0a24c1981246a2c93ac405",
                            "lessThan": "914704c7b318bdaa42dce4e55f6c492190fee3b5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "468711a40d5dfc01bf0a24c1981246a2c93ac405",
                            "lessThan": "1b01d725d8b42450b86a857bab3c46856c740166",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc83cd7b7d73d42ee64c7fc08ce679957df0f315",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.19.7",
                            "lessThan": "6.20",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/pci/controller/dwc/pcie-designware-ep.c",
                        "drivers/pci/controller/dwc/pcie-designware.h"
                    ],
                    "versions": [
                        {
                            "version": "7.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }