[v2] cxl: Fix error path on bad ioctl

[Michael Ellerman]

On Tue, 2017-06-06 at 09:43:41 UTC, Frederic Barrat wrote:
> Fix error path if we can't copy user structure on CXL_IOCTL_START_WORK
> ioctl. We shouldn't unlock the context status mutex as it was not
> locked (yet).
> 
> Signed-off-by: Frederic Barrat <fbarrat at linux.vnet.ibm.com>
> Cc: stable at vger.kernel.org
> Fixes: 0712dc7e73e5 ("cxl: Fix issues when unmapping contexts")

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/cec422c11caeeccae709e9942058b6

cheers