net: ethernet: sun4i-emac: Fix IRQ error handling

net: ethernet: sun4i-emac: Fix IRQ error handling

[ Upstream commit 991c2be78257cba5bf53cf935fe70f8836964288 ]

irq_of_parse_and_map() returns 0 when parsing or mapping an IRQ fails.
The current code checks for -ENXIO and therefore does not detect the
failure.

Check for a zero return value and convert it to -ENXIO.

Fixes: 492205050d77 ("net: Add EMAC ethernet driver found on Allwinner A10 SoC's")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://patch.msgid.link/20260824100901.31675-1-phucduc.bui@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>