drm/amdgpu: Remove redundant itermediate return val in sdma_v4_0.c

Signed-off-by: Rex Zhu <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

···
 	if (r)
 		return r;
 	r = sdma_v4_0_rlc_resume(adev);
-	if (r)
-		return r;
 
-	return 0;
+	return r;
 }
 
 /**
···
 	sdma_v4_0_init_golden_registers(adev);
 
 	r = sdma_v4_0_start(adev);
-	if (r)
-		return r;
 
 	return r;
 }