evm: prevent passing integrity check if xattr read fails
evm: prevent passing integrity check if xattr read fails

This patch fixes a bug, where evm_verify_hmac() returns INTEGRITY_PASS
if inode->i_op->getxattr() returns an error in evm_find_protected_xattrs.

Signed-off-by: Dmitry Kasatkin <c116bc32ce0fd3cd5ab78828b5c5c631dc6f63d8@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs