dpt_i2o: Fix typo of EINVAL

Commit ef7562b7 ("dpt_i2o: Fix up
copy*user") had a silly typo: EINVAL should be -EINVAL.
Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: stable@kernel.org
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/scsi/dpt_i2o.c

@@ -1919,7 +1919,7 @@ static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
 		size = size>>16;
 		size *= 4;
 		if (size > MAX_MESSAGE_SIZE) {
-			rcode = EINVAL;
+			rcode = -EINVAL;
 			goto cleanup;
 		}
 		/* Copy in the user's I2O command */