stmmac: intel: Fix an error handling path in intel_eth_pci_probe()

When the managed API is used, there is no need to explicitly call
pci_free_irq_vectors().

This looks to be a left-over from the commit in the Fixes tag. Only the
.remove() function had been updated.

So remove this unused function call and update goto label accordingly.

Fixes: 8accc467 ("stmmac: intel: use managed PCI function on probe and resume")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Link: https://lore.kernel.org/r/1ac9b6787b0db83b0095711882c55c77c8ea8da0.1654462241.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Paolo Abeni <pabeni@redhat.com>