crypto: sa2ul - Fix pm_runtime enable in sa_ul_probe()

The pm_runtime APIs added first in commit 7694b6ca ("crypto: sa2ul -
Add crypto driver") are not unwound properly and was fixed up partially
in commit 13343bad ("crypto: sa2ul - Fix PM reference leak in
sa_ul_probe()"). This fixed up the pm_runtime usage count but not the
state. Fix this properly.

Fixes: 13343bad ("crypto: sa2ul - Fix PM reference leak in sa_ul_probe()")
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Tero Kristo <kristo@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>