crypto: stm32/cryp - fix double pm exit

stable inclusion
from linux-4.19.226
commit a803ac39fb163677b4eaf5317894a3dd62912b56

--------------------------------

[ Upstream commit 6c12e742 ]

Delete extraneous lines in probe error handling code: pm was
disabled twice.

Fixes: 65f9aa36 ("crypto: stm32/cryp - Add power management support")

Reported-by: Marek Vasut <marex@denx.de>
Signed-off-by: Nicolas Toromanoff <nicolas.toromanoff@foss.st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>
Signed-off-by: Laibin Qiu <qiulaibin@huawei.com>