Re: [PATCH] net: sched: One function call less in em_meta_change() after error detection

[David Miller]

From: SF Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 31 Jan 2015 17:34:54 +0100

> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Sat, 31 Jan 2015 17:18:48 +0100
> 
> The meta_delete() function could be called in four cases by the
> em_meta_change() function during error handling even if the passed
> variable "meta" contained still a null pointer.
> 
> * This implementation detail could be improved by adjustments for jump labels.
> 
> * Let us return immediately after the first failed function call according to
>   the current Linux coding style convention.
> 
> * Let us delete also unnecessary checks for the variables "err" and
>   "meta" there.
> 
> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>

I kind of like the way the code is now, branching to the end of the function
even when cleanups are not necessary.

Inter-function return statements make code harder to audit, for locking
errors, resource leaks, etc.
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