drm/amdgpu: some code refinement v2

Fix the code alignment, etc.

v2: rebase the code

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
index 0f55c05..788dd348 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
@@ -33,11 +33,12 @@
 {
 	int r = 0;
 	struct amdgpu_cs_parser *sched_job = (struct amdgpu_cs_parser *)job;
-	if (sched_job->prepare_job)
+	if (sched_job->prepare_job) {
 		r = sched_job->prepare_job(sched_job);
-	if (r) {
-		DRM_ERROR("Prepare job error\n");
-		schedule_work(&sched_job->job_work);
+		if (r) {
+			DRM_ERROR("Prepare job error\n");
+			schedule_work(&sched_job->job_work);
+		}
 	}
 	return r;
 }