spi: amlogic: spifc-a4: unregister ECC engine on probe failure and remove() callback

aml_sfc_probe() registers the on-host NAND ECC engine, but teardown was
missing from both probe unwind and remove-time cleanup. Add a devm cleanup
action after successful registration so
nand_ecc_unregister_on_host_hw_engine() runs automatically on probe
failures and during device removal.

Fixes: 4670db6 ("spi: amlogic: add driver for Amlogic SPI Flash Controller")
Signed-off-by: Felix Gu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: outman119

drivers/spi/spi-amlogic-spifc-a4.c

@@ -1066,6 +1066,13 @@ static const struct nand_ecc_engine_ops aml_sfc_ecc_engine_ops = {
 	.finish_io_req = aml_sfc_ecc_finish_io_req,
 };
 
+static void aml_sfc_unregister_ecc_engine(void *data)
+{
+	struct nand_ecc_engine *eng = data;
+
+	nand_ecc_unregister_on_host_hw_engine(eng);
+}
+
 static int aml_sfc_clk_init(struct aml_sfc *sfc)
 {
 	sfc->gate_clk = devm_clk_get_enabled(sfc->dev, "gate");
@@ -1149,6 +1156,11 @@ static int aml_sfc_probe(struct platform_device *pdev)
 	if (ret)
 		return dev_err_probe(&pdev->dev, ret, "failed to register Aml host ecc engine.\n");
 
+	ret = devm_add_action_or_reset(dev, aml_sfc_unregister_ecc_engine,
+				       &sfc->ecc_eng);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to add ECC unregister action\n");
+
 	ret = of_property_read_u32(np, "amlogic,rx-adj", &val);
 	if (!ret)
 		sfc->rx_adj = val;