spi: atmel-quadspi: Fix uninitialized res

The second platform_get_resource_byname() can not be replaced with
devm_platform_ioremap_resource_byname(), because the intermediate "res"
is used to assign for "aq->mmap_size".

Fixes: 3ccea1de ("spi: atmel-quadspi: Simpify resource lookup")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
Link: https://patch.msgid.link/20240826125913.3434305-2-ruanjinjie@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/atmel-quadspi.c

@@ -608,7 +608,8 @@ static int atmel_qspi_probe(struct platform_device *pdev)
 	}
 
 	/* Map the AHB memory */
-	aq->mem = devm_platform_ioremap_resource_byname(pdev, "qspi_mmap");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi_mmap");
+	aq->mem = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(aq->mem)) {
 		dev_err(&pdev->dev, "missing AHB memory\n");
 		return PTR_ERR(aq->mem);