crypto: marvell/cesa - Fix engine load inaccuracy

[ Upstream commit 442134ab ]

If an error occurs during queueing the engine load will never be
decremented.  Fix this by moving the engine load adjustment into
the cleanup function.

Fixes: bf8f91e7 ("crypto: marvell - Add load balancing between engines")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>