perf: Fix unclone_ctx() vs. locking

perf: Fix unclone_ctx() vs. locking

The idiot who did 4a1c0f262f88 ("perf: Fix lockdep warning on process exit")
forgot to pay attention and fix all similar cases. Do so now.

In particular, unclone_ctx() must be called while holding ctx->lock,
therefore all such sites are broken for the same reason. Pull the
put_ctx() call out from under ctx->lock.

Reported-by: Sasha Levin <[email protected]>
Probably-also-reported-by: Vince Weaver <[email protected]>
Fixes: 4a1c0f262f88 ("perf: Fix lockdep warning on process exit")
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Sasha Levin <[email protected]>
Cc: Cong Wang <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>