platform/x86: think-lmi: Fix memory leak when showing current settings

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Fix memory leak when showing current settings When retriving a item string with tlmi_setting(), the result has to be freed using kfree(). In current_value_show() however, malformed item strings are not freed, causing a memory leak. Fix this by eliminating the early return responsible for this.

References

• https://git.kernel.org/stable/c/b9396d991abe8d1ac31a043274ab20b49f92c2e6
• https://git.kernel.org/stable/c/9071525bfcb1f5674117dbed3eca0cd7b122813b
• https://git.kernel.org/stable/c/5f99014c19fa50a5719c0bb78143282632675893
• https://git.kernel.org/stable/c/a3c4c053014585dcf20f4df954791b74d8a8afcd