iris: Fix return of iris_wait_syncobj()

iris_wait_syncobj() succeed if IOCTL return is 0 otherwise it failled.

Cc: mesa-stable
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27500>
(cherry picked from commit 138303fb9d)

.pick_status.json

@@ -2874,7 +2874,7 @@
         "description": "iris: Fix return of iris_wait_syncobj()",
         "nominated": true,
         "nomination_type": 0,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null,
         "notes": null

src/gallium/drivers/iris/iris_fence.c

@@ -155,7 +155,7 @@ clear_stale_syncobjs(struct iris_batch *batch)
                                struct iris_batch_fence, i);
       assert(fence->flags & IRIS_BATCH_FENCE_WAIT);
 
-      if (iris_wait_syncobj(bufmgr, *syncobj, 0))
+      if (iris_wait_syncobj(bufmgr, *syncobj, 0) == false)
          continue;
 
       /* This sync object has already passed, there's no need to continue
@@ -225,7 +225,7 @@ iris_wait_syncobj(struct iris_bufmgr *bufmgr,
       .count_handles = 1,
       .timeout_nsec = timeout_nsec,
    };
-   return intel_ioctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &args);
+   return intel_ioctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &args) == 0;
 }
 
 #define CSI "\e["