firmware: zynqmp: Remove redundant child device bind

Remove the redundant child device bind from the driver bind function and
rely on the post_bind of the class which calls the same function.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Link: https://lore.kernel.org/r/20230523124215.30915-2-stefan.herbrechtsmeier-oss@weidmueller.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index 2b1ad5d..ca3a0b5 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -395,7 +395,7 @@
 		}
 	}
 
-	return dm_scan_fdt_dev(dev);
+	return 0;
 }
 
 U_BOOT_DRIVER(zynqmp_firmware) = {