phy: fix create_phy_by_mask for when its given an actual search mask

get_phy_id returns -EIO when it can't read from a phy at a given addr.  This would cause
create_phy_by_mask to return prematurely before it had tested the other addresses in the provided mask.

Example usage:
Replace
    phydev = phy_connect(bus, phy_addr, dev, phy_if)
with
    phydev = phy_find_by_mask(bus, phy_mask, phy_if)
    if (phydev)
	phy_connect_dev(phydev, dev);

Signed-off-by: Cormier, Jonathan <jcormier@criticallink.com>
Cc: Joe Hershberger <joe.hershberger@gmail.com>

drivers/net/phy/phy.c

@@ -609,10 +609,8 @@ static struct phy_device *create_phy_by_mask(struct mii_dev *bus,
 	while (phy_mask) {
 		int addr = ffs(phy_mask) - 1;
 		int r = get_phy_id(bus, addr, devad, &phy_id);
-		if (r < 0)
-			return ERR_PTR(r);
 		/* If the PHY ID is mostly f's, we didn't find anything */
-		if ((phy_id & 0x1fffffff) != 0x1fffffff)
+		if (r == 0 && (phy_id & 0x1fffffff) != 0x1fffffff)
 			return phy_device_create(bus, addr, phy_id, interface);
 		phy_mask &= ~(1 << addr);
 	}