crypto: talitos - fix checkpatch warning

WARNING: kfree(NULL) is safe this check is probably not required
+		if (priv->chan[i].fifo)
+			kfree(priv->chan[i].fifo);

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>