audio: eq_iir: Improve robustness for invalid configuration #23512

Job	Run time
build-linux (mnfst, imx8 imx8x)	4m 30s
build-linux (mnfst, ptl)	6m 9s
manifest-check	2m 47s
LP64-WIP	3m 37s
build-linux (mnfst, tgl-h)	4m 21s
build-linux (mnfst, tgl)	4m 23s
build-windows (-d, mnfst, lnl)	8m 22s
build-windows (mnfst, imx8 imx8x)	9m 42s
build-linux (mnfst, mtl)	4m 41s
build-windows (mnfst, imx8m imx8ulp)	10m 41s
build-linux (mnfst, imx8m imx8ulp)	4m 56s
build-windows (mnfst, lnl)	8m 35s
build-linux (mnfst, wcl imx95)	7m 3s
build-windows (mnfst, tgl-h)	9m 2s
build-linux (mnfst, lnl)	4m 30s
build-linux (-d, mnfst, lnl)	4m 46s
build-windows (mnfst, tgl)	9m 47s
build-windows (mnfst, mtl)	9m 6s
build-windows (mnfst, ptl)	9m 43s
compare-linux-win	27s
	2h 7m 8s

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