PCI/DPC: Initialize aer_err_info before using it

Previously the struct aer_err_info "info" was allocated on the stack
without being initialized, so it contained junk except for the fields we
explicitly set later.

Initialize "info" at declaration so it starts as all zeros.

Fixes: 8aefa9b ("PCI/DPC: Print AER status in DPC event handling")
Signed-off-by: Bjorn Helgaas <[email protected]>
Tested-by: Krzysztof Wilczyński <[email protected]>
Reviewed-by: Kuppuswamy Sathyanarayanan <[email protected]>
Reviewed-by: Ilpo Järvinen <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: bjorn-helgaas

drivers/pci/pcie/dpc.c

@@ -258,7 +258,7 @@ static int dpc_get_aer_uncorrect_severity(struct pci_dev *dev,
 void dpc_process_error(struct pci_dev *pdev)
 {
 	u16 cap = pdev->dpc_cap, status, source, reason, ext_reason;
-	struct aer_err_info info;
+	struct aer_err_info info = {};
 
 	pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status);
 	pci_read_config_word(pdev, cap + PCI_EXP_DPC_SOURCE_ID, &source);