usb: musb: musb_dsps: Simplify return statement

Replace redundant variable use in return statement.
Signed-off-by: Saurabh Karajgaonkar <skarajga@visteon.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_dsps.c

@@ -482,11 +482,7 @@ static int dsps_musb_init(struct musb *musb)
 		dsps_writeb(musb->mregs, MUSB_BABBLE_CTL, val);
 	}
 
-	ret = dsps_musb_dbg_init(musb, glue);
-	if (ret)
-		return ret;
-
-	return 0;
+	return dsps_musb_dbg_init(musb, glue);
 }
 
 static int dsps_musb_exit(struct musb *musb)