video: truetype: Fix a memory leak on error

When the resolution is not supported we should free the memory we don't plan
to use.

Reported-by: Coverity (CID: 135127)

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/console_truetype.c b/drivers/video/console_truetype.c
index c249f04..e16f95a 100644
--- a/drivers/video/console_truetype.c
+++ b/drivers/video/console_truetype.c
@@ -289,6 +289,7 @@
 		}
 #endif
 		default:
+			free(data);
 			return -ENOSYS;
 		}