arm/crc-t10dif: fix use of out-of-scope array in crc_t10dif_arch()

Fix a silly bug where an array was used outside of its scope.

Fixes: 1684e829 ("arm/crc-t10dif: expose CRC-T10DIF function through lib")
Cc: stable@vger.kernel.org
Reported-by: David Binderman <dcb314@hotmail.com>
Closes: https://lore.kernel.org/r/AS8PR02MB102170568EAE7FFDF93C8D1ED9CA62@AS8PR02MB10217.eurprd02.prod.outlook.com
Link: https://lore.kernel.org/r/20250326200812.125574-1-ebiggers@kernel.org


Signed-off-by: Eric Biggers <ebiggers@google.com>