phy: exynos5-usbdrd: fix error code in probe()

Return negative -ENOMEM instead of positive ENOMEM.

Fixes: 497ddafe915e ("phy: exynos5-usbdrd: convert Vbus supplies to regulator_bulk")
Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Peter Griffin <[e-mail]>
Reviewed-by: André Draszik <[e-mail]>
Reviewed-by: Sam Protsenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/samsung/phy-exynos5-usbdrd.c

···
 					   sizeof(*phy_drd->regulators),
 					   GFP_KERNEL);
 	if (!phy_drd->regulators)
-		return ENOMEM;
+		return -ENOMEM;
 	regulator_bulk_set_supply_names(phy_drd->regulators,
 					drv_data->regulator_names,
 					drv_data->n_regulators);