drm/amdgpu: add missing breaks

Saves a few CPU cycles.

Reviewed-by: Chunming zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index c281cfd..e3cfee1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1080,6 +1080,7 @@
 									    state);
 			if (r)
 				return r;
+			break;
 		}
 	}
 	return r;
@@ -1097,6 +1098,7 @@
 									    state);
 			if (r)
 				return r;
+			break;
 		}
 	}
 	return r;