drm/i915: Swap ret and status returned from skl_pcode_request

If ret isn't zero, it is almost for sure ETIMEDOUT, because
we use it in wait_for macro which does continuous retries
until timeout is reached. If we still ran out of time and
retries, we most likely would be interested in getting status,
to understand what was the actual error propagated from PCode,
rather than to find out that we had a time out, which is anyway
quite obvious, if the function fails.

v2: Make it status ? status : ret(thanks Vinod for the hint)

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220411081343.18099-1-stanislav.lisovskiy@intel.com

drivers/gpu/drm/i915/intel_pcode.c

@@ -202,7 +202,7 @@ int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
 
 out:
 	mutex_unlock(&i915->sb_lock);
-	return ret ? ret : status;
+	return status ? status : ret;
 #undef COND
 }