[bug report] accel/amdxdna: Support firmware debug buffer

[Dan Carpenter <dan.carpenter@linaro.org>]

Hello Lizhi Hou,

Commit 7ea046838021 ("accel/amdxdna: Support firmware debug buffer")
from Oct 16, 2025 (linux-next), leads to the following Smatch static
checker warning:

	drivers/accel/amdxdna/aie2_ctx.c:882 aie2_hwctx_sync_debug_bo()
	warn: missing error code? 'ret'

drivers/accel/amdxdna/aie2_ctx.c
    863 int aie2_hwctx_sync_debug_bo(struct amdxdna_hwctx *hwctx, u32 debug_bo_hdl)
    864 {
    865         struct amdxdna_client *client = hwctx->client;
    866         struct amdxdna_dev *xdna = client->xdna;
    867         struct amdxdna_drv_cmd cmd = { 0 };
    868         u64 seq;
    869         int ret;
    870 
    871         cmd.opcode = SYNC_DEBUG_BO;
    872         ret = amdxdna_cmd_submit(client, &cmd, AMDXDNA_INVALID_BO_HANDLE,
    873                                  &debug_bo_hdl, 1, hwctx->id, &seq);
    874         if (ret) {
    875                 XDNA_ERR(xdna, "Submit command failed");
    876                 return ret;
    877         }
    878 
    879         aie2_cmd_wait(hwctx, seq);
    880         if (cmd.result) {
    881                 XDNA_ERR(xdna, "Response failure 0x%x", cmd.result);
--> 882                 return ret;

ret is zero.  return -EINVAL or something?

    883         }
    884 
    885         return 0;
    886 }

regards,
dan carpenter