ASoC: SOF: Intel: Do not (wrongly) assume positive return value in IMR path

ASoC: SOF: Intel: Do not (wrongly) assume positive return value in IMR path

The cl_dsp_init() returns 0 on success or negative errno on error.
Replace the 'if (ret >= 0)' checks with correct 'if (!ret)` to check for
success.

Fixes: 70f3d01cccc4 ("ASoC: SOF: Intel: hda: Revisit IMR boot sequence")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220427115159.26177-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>