accel/ivpu: Check return code of ipc->lock init

Return value of drmm_mutex_init(ipc->lock) was unchecked.

Fixes: 5d7422cf ("accel/ivpu: Add IPC driver and JSM messages")
Cc: <stable@vger.kernel.org> # v6.3+
Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240402104929.941186-2-jacek.lawrynowicz@linux.intel.com

drivers/accel/ivpu/ivpu_ipc.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2023 Intel Corporation
+ * Copyright (C) 2020-2024 Intel Corporation
  */
 
 #include <linux/genalloc.h>
@@ -501,7 +501,11 @@ int ivpu_ipc_init(struct ivpu_device *vdev)
 	spin_lock_init(&ipc->cons_lock);
 	INIT_LIST_HEAD(&ipc->cons_list);
 	INIT_LIST_HEAD(&ipc->cb_msg_list);
-	drmm_mutex_init(&vdev->drm, &ipc->lock);
+	ret = drmm_mutex_init(&vdev->drm, &ipc->lock);
+	if (ret) {
+		ivpu_err(vdev, "Failed to initialize ipc->lock, ret %d\n", ret);
+		goto err_free_rx;
+	}
 	ivpu_ipc_reset(vdev);
 	return 0;