Merge branch 'fix-some-issues-in-netdevsim-driver'

Zhengchao Shao says:

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fix some issues in netdevsim driver

When strace tool is used to perform memory injection, memory leaks and
files not removed issues are found. Fix them.
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Link: https://lore.kernel.org/r/20221026014642.116261-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>