mdio: mux: avoid 'maybe-uninitialized' warning
The latest changes to the MDIO code introduced a false-positive warning with gcc-6 (possibly others): drivers/net/phy/mdio-mux.c: In function 'mdio_mux_init': drivers/net/phy/mdio-mux.c:188:3: error: 'parent_bus_node' may be used uninitialized in this function [-Werror=maybe-uninitialized] It's easy to avoid the warning by making sure the parent_bus_node is initialized in both cases at the start of the function, since the later 'of_node_put()' call is also valid for a NULL pointer argument. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Fixes: f20e6657 ("mdio: mux: Enhanced MDIO mux framework for integrated multiplexers") Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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