Fix coverity error (ARMmbed#1943)

Arto Kinnunen · web-flow · commit 38b28e2007fb · 2019-01-18T14:17:30.000+02:00
Fix CID 1397068: Error handling issues (CHECKED_RETURN)
diff --git a/source/Service_Libs/CCM_lib/mbedOS/aes_mbedtls_adapter.c b/source/Service_Libs/CCM_lib/mbedOS/aes_mbedtls_adapter.c
@@ -83,7 +83,9 @@ arm_aes_context_t *arm_aes_start(const uint8_t key[static 16])
     arm_aes_context_t *context = mbed_tls_context_get();
     if (context) {
         mbedtls_aes_init(&context->ctx);
-        mbedtls_aes_setkey_enc(&context->ctx, key, 128);
+        if (0 != mbedtls_aes_setkey_enc(&context->ctx, key, 128)) {
+            return NULL;
+        }
     }
     return context;
 }

Original file line number	Diff line number	Diff line change
`@@ -83,7 +83,9 @@ arm_aes_context_t *arm_aes_start(const uint8_t key[static 16])`
`83`	`83`	`arm_aes_context_t *context = mbed_tls_context_get();`
`84`	`84`	`if (context) {`
`85`	`85`	`mbedtls_aes_init(&context->ctx);`
`86`		`- mbedtls_aes_setkey_enc(&context->ctx, key, 128);`
	`86`	`+ if (0 != mbedtls_aes_setkey_enc(&context->ctx, key, 128)) {`
	`87`	`+ return NULL;`
	`88`	`+ }`
`87`	`89`	`}`
`88`	`90`	`return context;`
`89`	`91`	`}`