chain-dma: fix potential NULL dereference #10955 #23828

Job	Run time
build-windows (mnfst, tgl-h)	9m 22s
build-windows (mnfst, mtl)	7m 39s
build-windows (mnfst, lnl)	8m 36s
LP64-WIP	3m 40s
manifest-check	2m 57s
build-windows (mnfst, tgl)	8m 32s
build-windows (mnfst, ptl)	10m 7s
build-windows (mnfst, imx8 imx8x)	9m 25s
build-windows (-d, mnfst, lnl)	8m 0s
build-windows (mnfst, imx8m imx8ulp)	10m 29s
build-linux (mnfst, imx8 imx8x)	4m 26s
build-linux (mnfst, lnl)	4m 3s
build-linux (mnfst, mtl)	3m 46s
build-linux (mnfst, imx8m imx8ulp)	4m 28s
build-linux (mnfst, wcl imx95)	5m 41s
build-linux (mnfst, tgl-h)	3m 52s
build-linux (mnfst, ptl)	5m 21s
build-linux (-d, mnfst, lnl)	4m 7s
build-linux (mnfst, tgl)	3m 55s
compare-linux-win	28s
	1h 58m 54s

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