mm/madvise: fix memory leak from process_madvise
The early return in process_madvise() will produce a memory leak. Fix it. Fixes: ecb8ac8b ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NMinchan Kim <minchan@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20201116155132.GA3805951@google.comSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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