nrf_security: Fix error code check in Cracen PSA

In one case inside the KMU Cracen driver a call
to get a random value was not checked, this check
is now added.

Signed-off-by: Georgios Vasilakis <[email protected]>

Author: Vge0rge

subsys/nrf_security/src/drivers/cracen/cracenpsa/src/kmu.c

@@ -151,6 +151,9 @@ static psa_status_t cracen_kmu_encrypt(const uint8_t *key, size_t key_length,
 
 	if (encrypted_buffer_size > CRACEN_KMU_SLOT_KEY_SIZE) {
 		psa_status = cracen_get_random(NULL, encrypted_buffer, CRACEN_KMU_SLOT_KEY_SIZE);
+		if (psa_status != PSA_SUCCESS) {
+			return psa_status;
+		}
 	} else {
 		return PSA_ERROR_GENERIC_ERROR;
 	}