Revert "thermal/core: Fix memory leak in the error path"

This reverts commit 54cdc10a which is
commit d44616c6 upstream.

It breaks the Android kernel ABI and is not needed for Android devices,
so it is safe to revert for now.  If it is determined that it is needed
in the future, it can be brought back in an abi-preserving way.

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I83010322077db689f57ae26b2bc3775af944384f