crypto: ux500/hash - simplify if-if to if-else

Replace `if (!req_ctx->updated)` with `else` for simplification
and add curly brackets according to the kernel coding style:

"Do not unnecessarily use braces where a single statement will do."

...

"This does not apply if only one branch of a conditional statement is
a single statement; in the latter case use braces in both branches"

Please refer to:
https://www.kernel.org/doc/html/v5.17-rc8/process/coding-style.html

Signed-off-by: Yihao Han <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/ux500/hash/hash_core.c

···
 				__func__);
 			goto out;
 		}
-	}
-
-	if (!req_ctx->updated) {
+	} else {
 		ret = hash_setconfiguration(device_data, &ctx->config);
 		if (ret) {
 			dev_err(device_data->dev,