bpf: fix return in load_bpf_file
The function load_bpf_file ignores the return value of load_and_attach(), so even if load_and_attach() returns an error, load_bpf_file() will return 0. Now, load_bpf_file() can call load_and_attach() multiple times and some can succeed and some could fail. I think the correct behavor is to return error on the first failed load_and_attach(). v2: Added missing SOB Signed-off-by: NLawrence Brakmo <brakmo@fb.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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