media: platform: mtk-mdp3: fix error code in mdp_vpu_dev_init()

Return a negative error code if mdp_vpu_shared_mem_alloc() fails.

Fixes: 61890cca ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c

@@ -173,7 +173,8 @@ int mdp_vpu_dev_init(struct mdp_vpu_dev *vpu, struct mtk_scp *scp,
 	/* vpu work_size was set in mdp_vpu_ipi_handle_init_ack */
 
 	mem_size = vpu_alloc_size;
-	if (mdp_vpu_shared_mem_alloc(vpu)) {
+	err = mdp_vpu_shared_mem_alloc(vpu);
+	if (err) {
 		dev_err(&mdp->pdev->dev, "VPU memory alloc fail!");
 		goto err_mem_alloc;
 	}