[PATCH] regulator: core: Resolve supply name earlier to prevent double-init

[Mark Brown]

On Fri, Jul 15, 2022 at 10:32:16PM +0200, Christian Kohlschütter wrote:
> Previously, an unresolved regulator supply reference upon calling
> regulator_register on an always-on or boot-on regulator caused
> set_machine_constraints to be called twice.

One small thing below but otherwise I think this should be fine, however
since we're very near the merge window I'd rather hold off any apply at
-rc1, just to give more time for things to get tested.

> -	/* set regulator constraints */
> -	if (init_data)
> -		rdev->constraints = kmemdup(&init_data->constraints,
> -					    sizeof(*rdev->constraints),
> -					    GFP_KERNEL);
> -	else
> -		rdev->constraints = kzalloc(sizeof(*rdev->constraints),
> -					    GFP_KERNEL);
>  	if (!rdev->constraints) {
>  		ret = -ENOMEM;
>  		goto wash;
>  	}

The check for allocation failure should get pulled earlier in the
function along with the allocation, no sense in doing any of the other
work if we're going to fail.
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