vfio/iommu_type1: replace kfree with kvfree

virt inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6FHYK
CVE: NA

Reference: https://github.com/torvalds/linux/commit/2bed2ced40c97b8540ff38df0149e8ecb2bf4c65



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[ Upstream commit 2bed2ced ]

Variables allocated by kvzalloc should not be freed by kfree.
Because they may be allocated by vmalloc.
So we replace kfree with kvfree here.

Fixes: d6a4c185 ("vfio iommu: Implementation of ioctl for dirty pages tracking")
Signed-off-by: Jiacheng Shi <billsjc@sjtu.edu.cn>
Link: https://lore.kernel.org/r/20211212091600.2560-1-billsjc@sjtu.edu.cn


Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com>
Reviewed-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>