[PATCH v1.1 1/2] v4l2-fwnode: Avoid using PTR_ERR(NULL)

[Sakari Ailus]

PTR_ERR(NULL) yields 0 which is commonly used to denote success. This is
the case here, and PTR_ERR(NULL) is apparently shunned upon. Fix this by
explicitly returning 0 if fwnode == NULL.

Reported-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
---
since v1:

- Fix rebase mess.

 drivers/media/v4l2-core/v4l2-fwnode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c 
b/drivers/media/v4l2-core/v4l2-fwnode.c
index dea8917fd912..a46b713a7fbf 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -1098,7 +1098,7 @@ v4l2_fwnode_reference_parse_int_props(struct device *dev,
                }
        }
 
-       return PTR_ERR(fwnode) == -ENOENT ? 0 : PTR_ERR(fwnode);
+       return !fwnode || PTR_ERR(fwnode) == -ENOENT ? 0 : PTR_ERR(fwnode);
 
 error:
        fwnode_handle_put(fwnode);
-- 
2.11.0