fscrypt: remove redundant bi_status check

submit_bio_wait() already returns bi_status translated to an errno.
So the additional check of bi_status is redundant and can be removed.

Link: https://lore.kernel.org/r/20191209204509.228942-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>

fs/crypto/bio.c

@@ -77,8 +77,6 @@ int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,
 			goto errout;
 		}
 		err = submit_bio_wait(bio);
-		if (err == 0 && bio->bi_status)
-			err = -EIO;
 		bio_put(bio);
 		if (err)
 			goto errout;