Add missing call to 'phy_exit' function if the phy_power_on call fails. With this call added the error path is properly handled. Fixes: 07420a02b003 ("staging: mt7621-pci: use gpio perst instead of builtin behaviour") Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>