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debugfs calls should generally not be error-checked to simplify the case where debugfs is disabled. Since this driver is built-in and has the sysfs bind/unbind attributes disabled, it cannot be unloaded, so there is no need to hold onto a reference to the debugfs files that are created. We can further simplify this by moving the debugfs file creation to a later stage to avoid any cleanup we might have to do during error unwind operations. This is also a little cleaner because the debugfs file relies on data structures that are created at a later point than when the file was previously created. Suggested-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>