usb: musb: dsps: fix error return code in dsps_create_musb_pdev()

Fix to return -ENOMEM in the devm_kzalloc() error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 3a18e44..e1b661d0 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -560,6 +560,7 @@
 		if (!config) {
 			dev_err(&pdev->dev,
 				"failed to allocate musb hdrc config\n");
+			ret = -ENOMEM;
 			goto err2;
 		}