Revert "iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()"

hulk inclusion
category: bugfix
bugzilla: 187358, https://gitee.com/openeuler/kernel/issues/I5KD2A


CVE: NA

---------------------------------

This reverts commit 75624b5b.

This patch could cause double-free problem, when 'irqdomain' is
failed to add, in which case, irq_domain_free_fwnode(fn) will be
called twice.

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>