crypto: ccp - remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/crypto/ccp/sev-dev.c:263:2-3: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>