rimage: elf: fixed error handling from file operation #15987

Job	Run time
LP64-WIP	3m 23s
manifest-check	40s
build-windows (imx8 imx8x imx8m)	7m 0s
build-linux (mnfst, imx8 imx8x imx8m)	4m 37s
build-windows (mtl)	5m 59s
build-linux (mnfst, mtl)	5m 51s
build-windows (tgl tgl-h)	6m 49s
build-linux (mnfst, lnl)	3m 54s
build-windows (-d, mtl)	6m 3s
build-linux (mnfst, tgl tgl-h)	5m 0s
build-linux (zmain, imx8 imx8x imx8m)	4m 5s
build-linux (zmain, mtl)	3m 56s
build-linux (zmain, lnl)	4m 4s
build-linux (zmain, tgl tgl-h)	5m 3s
build-linux (-d, mnfst, mtl)	4m 26s
compare-linux-win	22s
	1h 11m 12s

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