[PATCH -next] spi: fsl: add missing iounmap() on error in of_fsl_spi_probe()

[Yang Yingliang]

Add the missing iounmap() before return from of_fsl_spi_probe()
in the error handling case.

Fixes: 0f0581b24bd0 ("spi: fsl: Convert to use CS GPIO descriptors")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
 drivers/spi/spi-fsl-spi.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index e4a8d203f940..d0e5aa18b7ba 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -707,6 +707,11 @@ static int of_fsl_spi_probe(struct platform_device *ofdev)
        struct resource mem;
        int irq, type;
        int ret;
+       bool spisel_boot = false;
+#if IS_ENABLED(CONFIG_FSL_SOC)
+       struct mpc8xxx_spi_probe_info *pinfo = NULL;
+#endif
+
 
        ret = of_mpc8xxx_spi_probe(ofdev);
        if (ret)
@@ -715,9 +720,8 @@ static int of_fsl_spi_probe(struct platform_device *ofdev)
        type = fsl_spi_get_type(&ofdev->dev);
        if (type == TYPE_FSL) {
                struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
-               bool spisel_boot = false;
 #if IS_ENABLED(CONFIG_FSL_SOC)
-               struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+               pinfo = to_of_pinfo(pdata);
 
                spisel_boot = of_property_read_bool(np, "fsl,spisel_boot");
                if (spisel_boot) {
@@ -746,15 +750,24 @@ static int of_fsl_spi_probe(struct platform_device *ofdev)
 
        ret = of_address_to_resource(np, 0, &mem);
        if (ret)
-               return ret;
+               goto unmap_out;
 
        irq = platform_get_irq(ofdev, 0);
-       if (irq < 0)
-               return irq;
+       if (irq < 0) {
+               ret = irq;
+               goto unmap_out;
+       }
 
        master = fsl_spi_probe(dev, &mem, irq);
 
        return PTR_ERR_OR_ZERO(master);
+
+unmap_out:
+#if IS_ENABLED(CONFIG_FSL_SOC)
+       if (spisel_boot)
+               iounmap(pinfo->immr_spi_cs);
+#endif
+       return ret;
 }
 
 static int of_fsl_spi_remove(struct platform_device *ofdev)
-- 
2.25.1