powerpc/eeh-powernv: Fix unbalanced IRQ warning

[Michael Ellerman]

On Thu, 2015-30-07 at 06:53:54 UTC, Alistair Popple wrote:
> pnv_eeh_next_error() re-enables the eeh opal event interrupt but it
> gets called from a loop if there are more outstanding events to
> process, resulting in a warning due to enabling an already enabled
> interrupt. Instead the interrupt should only be re-enabled once the
> last outstanding event has been processed.
> 
> Tested-by: Daniel Axtens <dja at axtens.net>
> Reported-by: Daniel Axtens <dja at axtens.net>
> Signed-off-by: Alistair Popple <alistair at popple.id.au>
> Acked-by: Gavin Shan <gwshan at linux.vnet.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/b8d65e9662b1ffb3b52a

cheers