dpt_i2o: Fix typo of EINVAL

Commit ef7562b7f28319e6dd1f85dc1af87df2a7a84832 ("dpt_i2o: Fix up
copy*user") had a silly typo: EINVAL should be -EINVAL.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: stable@kernel.org
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 7d1aac3..4967643 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -1919,7 +1919,7 @@
 		size = size>>16;
 		size *= 4;
 		if (size > MAX_MESSAGE_SIZE) {
-			rcode = EINVAL;
+			rcode = -EINVAL;
 			goto cleanup;
 		}
 		/* Copy in the user's I2O command */