btrfs: do not BUG_ON() when freeing tree block after error

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/ctree.c",
                        "fs/btrfs/extent-tree.c",
                        "fs/btrfs/extent-tree.h",
                        "fs/btrfs/free-space-tree.c",
                        "fs/btrfs/ioctl.c",
                        "fs/btrfs/qgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "fb235dc06fac9eaa4408ade9c8b20d45d63c89b7",
                            "lessThan": "bfcef12f80b3a9bd6b09c7305679164e3307328a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb235dc06fac9eaa4408ade9c8b20d45d63c89b7",
                            "lessThan": "22d907bcd283d69d5e60497fc0d51969545c583b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb235dc06fac9eaa4408ade9c8b20d45d63c89b7",
                            "lessThan": "98251cd60b4d702a8a81de442ab621e83a3fb24f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb235dc06fac9eaa4408ade9c8b20d45d63c89b7",
                            "lessThan": "bb3868033a4cccff7be57e9145f2117cbdc91c11",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/ctree.c",
                        "fs/btrfs/extent-tree.c",
                        "fs/btrfs/extent-tree.h",
                        "fs/btrfs/free-space-tree.c",
                        "fs/btrfs/ioctl.c",
                        "fs/btrfs/qgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "4.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.64",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.5",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }