mac802154: llsec: fix return value check in llsec_key_alloc()
In case of error, the functions crypto_alloc_aead() and crypto_alloc_blkcipher() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: NAlexander Aring <alex.aring@gmail.com> Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
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