spi: stm32-ospi: Fix an IS_ERR() vs NULL bug in stm32_ospi_get_resources()

The devm_ioremap() function returns NULL on error, it doesn't return
error pointers.  Fix the check to match.

Fixes: 79b8a70 ("spi: stm32: Add OSPI driver")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Patrice Chotard <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Dan Carpenter

drivers/spi/spi-stm32-ospi.c

@@ -835,10 +835,10 @@ static int stm32_ospi_get_resources(struct platform_device *pdev)
 	if (rmem) {
 		ospi->mm_size = rmem->size;
 		ospi->mm_base = devm_ioremap(dev, rmem->base, rmem->size);
-		if (IS_ERR(ospi->mm_base)) {
+		if (!ospi->mm_base) {
 			dev_err(dev, "unable to map memory region: %pa+%pa\n",
 				&rmem->base, &rmem->size);
-			ret = PTR_ERR(ospi->mm_base);
+			ret = -ENOMEM;
 			goto err_dma;
 		}