drm/amd/amdgpu: remove useless break after return

This change is to remove useless break after return.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/dce_v8_0.c

@@ -2092,22 +2092,18 @@ static int dce_v8_0_pick_dig_encoder(struct drm_encoder *encoder)
 			return 1;
 		else
 			return 0;
-		break;
 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
 		if (dig->linkb)
 			return 3;
 		else
 			return 2;
-		break;
 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
 		if (dig->linkb)
 			return 5;
 		else
 			return 4;
-		break;
 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
 		return 6;
-		break;
 	default:
 		DRM_ERROR("invalid encoder_id: 0x%x\n", amdgpu_encoder->encoder_id);
 		return 0;