Fix mismatched use of xnn_allocate_zero_simd_memory and xnn_release_m… #5051

Job	Run time
build-and-test / cmake-linux-riscv64-rvv	7m 37s
build-and-test / cmake-linux-armhf	2m 3s
build-and-test / cmake-linux-riscv64	5m 6s
build-and-test / cmake-linux-aarch64	1m 56s
build-and-test / cmake-linux-x86_64	3m 54s
build-and-test / cmake-windows-arm64	2m 45s
build-and-test / cmake-windows-x64	2m 54s
build-and-test / bazel-linux-aarch64-clang18	1m 59s
build-and-test / bazel-linux-x86_64-clang-18	4m 30s
build-and-test / bazel-linux-aarch64-gcc13	1m 26s
build-and-test / bazel-linux-x86_64-gcc-9	4m 56s
build-and-test / cmake-android (arm64)	5m 37s
build-and-test / cmake-android (armv7)	3m 22s
build-and-test / cmake-ios-arm64	2m 22s
build-and-test / cmake-ios-x86_64	2m 58s
build-and-test / cmake-android (x86)	2m 7s
build-and-test / cmake-macos-arm64	1m 16s
build-and-test / cmake-windows-x86	1m 14s
	58m 2s

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