[PATCH] staging: vc04_services: fix ifnullfree.cocci warnings

[Eric Anholt]

kbuild test robot <fengguang.wu at intel.com> writes:

> drivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c:65:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.
>
>  NULL check before some freeing functions is not needed.
>
>  Based on checkpatch warning
>  "kfree(NULL) is safe this check is probably not required"
>  and kfreeaddr.cocci by Julia Lawall.
>
> Generated by: scripts/coccinelle/free/ifnullfree.cocci
>
> Signed-off-by: Fengguang Wu <fengguang.wu at intel.com>

Reviewed-by: Eric Anholt <eric at anholt.net>
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