remoteproc: mediatek: Fix error code in scp_rproc_init()

Set the error code to ERR_PTR(-ENOMEM).  Otherwise if there is an
allocation failure it leads to a NULL dereference in the caller.

Fixes: c08a824 ("remoteproc: mediatek: Support setting DRAM and IPI shared buffer sizes")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Author: Dan Carpenter

drivers/remoteproc/mtk_scp.c

@@ -1156,6 +1156,7 @@ static struct mtk_scp *scp_rproc_init(struct platform_device *pdev,
 	scp->share_buf = kzalloc(scp_sizes->ipi_share_buffer_size, GFP_KERNEL);
 	if (!scp->share_buf) {
 		dev_err(dev, "Failed to allocate IPI share buffer\n");
+		ret = -ENOMEM;
 		goto release_dev_mem;
 	}