usb: gadget: s3c-hsotg: fix PHY error handling

PHY laye rno longer return NULL. We need to
switch over from IS_ERR_OR_NULL() to IS_ERR().

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-03-15 10:56:19 +02:00
commit f4f5ba5e7d