misc: microchip: pci1xxxx: Fix some NULL vs IS_ERR() bugs

The devm_nvmem_register() function returns error pointers.  It never
returns NULL.  Update the checks accordingly.

Fixes: 0969001569e4 ("misc: microchip: pci1xxxx: Add support to read and write into PCI1XXXX OTP via NVMEM sysfs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/043df330-222b-4c2c-ae19-ed2f731bfe0b@moroto.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_otpe2p.c b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_otpe2p.c
index 3d3d157..16695cb 100644 (file)
--- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_otpe2p.c
+++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_otpe2p.c
@@ -379,8 +379,8 @@ static int pci1xxxx_otp_eeprom_probe(struct auxiliary_device *aux_dev,
 
                priv->nvmem_eeprom = devm_nvmem_register(&aux_dev->dev,
                                                         &priv->nvmem_config_eeprom);
-               if (!priv->nvmem_eeprom)
-                       return -ENOMEM;
+               if (IS_ERR(priv->nvmem_eeprom))
+                       return PTR_ERR(priv->nvmem_eeprom);
        }
 
        release_sys_lock(priv);
@@ -398,8 +398,8 @@ static int pci1xxxx_otp_eeprom_probe(struct auxiliary_device *aux_dev,
 
        priv->nvmem_otp = devm_nvmem_register(&aux_dev->dev,
                                              &priv->nvmem_config_otp);
-       if (!priv->nvmem_otp)
-               return -ENOMEM;
+       if (IS_ERR(priv->nvmem_otp))
+               return PTR_ERR(priv->nvmem_otp);
 
        return ret;
 }