usb: musb: dsps: remove duplicate check on resource

Sanity check on resource happening with devm_ioremap_resource().
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_dsps.c

@@ -447,9 +447,6 @@ static int dsps_musb_init(struct musb *musb)
 	int ret;
 
 	r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
-	if (!r)
-		return -EINVAL;
-
 	reg_base = devm_ioremap_resource(dev, r);
 	if (IS_ERR(reg_base))
 		return PTR_ERR(reg_base);