perf hisi-ptt: Fix memory leak in lseek failure handling

mainline inclusion
from mainline-v6.7-rc1
commit be7a4caa7c45bd4b0a39cdb260905b52a87c8688
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8MEWF
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be7a4caa7c45bd4b0a39cdb260905b52a87c8688



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In the previous code, there was a memory leak issue where the previously
allocated memory was not freed upon a failed lseek operation. This patch
addresses the problem by releasing the old memory before returning -errno
in case of a lseek failure. This ensures that memory is properly managed
and avoids potential memory leaks.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: yangyicong@hisilicon.com
Cc: jonathan.cameron@huawei.com
Link: https://lore.kernel.org/r/20230930072719.1267784-1-visitorckw@gmail.com


Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Junhao He <hejunhao3@huawei.com>