Add missing error conversion case

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 9582f19..028bdaa 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -157,6 +157,8 @@
         case MBEDTLS_ERR_AES_INVALID_KEY_LENGTH:
         case MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH:
             return PSA_ERROR_NOT_SUPPORTED;
+        case MBEDTLS_ERR_AES_BAD_INPUT_DATA:
+            return PSA_ERROR_INVALID_ARGUMENT;
 #endif
 
 #if defined(MBEDTLS_ASN1_PARSE_C) || defined(MBEDTLS_ASN1_WRITE_C)