drivers: net: fsl-mc: remove an useless break statement

The break statement is just after a goto statement, thus it will not get
executed. Just remove it.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index 66fcb48..180e57e 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -1961,7 +1961,6 @@
 	default:
 		printf("Invalid option: %s\n", argv[1]);
 		goto usage;
-		break;
 	}
 	return err;
  usage: