linux-imx

nvme-pci: Fix controller freeze wait disabling

If a controller disabling didn't start a freeze, don't wait for the
operation to complete.

Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <keith.busch@intel.com>