iwlwifi: pcie: print interrupt number, not index

Printing the interrupt index in our local array isn't very
useful in an error message, print the interrupt number (as
also shown in e.g. /proc/interrupts) instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210612142637.05bc5157e606.Ifb65b5ed2e5296fd8258c40c4287b5443b06d337@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -1648,7 +1648,7 @@ static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans)
 		if (ret)
 			IWL_ERR(trans_pcie->trans,
 				"Failed to set affinity mask for IRQ %d\n",
-				i);
+				trans_pcie->msix_entries[i].vector);
 	}
 }