iwlwifi: pcie: fix ALIVE interrupt handling for gen2 devices w/o MSI-X

commit ec46ae30 upstream.

We added code to restock the buffer upon ALIVE interrupt
when MSI-X is disabled. This was added as part of the context
info code. This code was added only if the ISR debug level
is set which is very unlikely to be related.
Move this code to run even when the ISR debug level is not
set.

Note that gen2 devices work with MSI-X in most cases so that
this path is seldom used.

Cc: stable@vger.kernel.org
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -1832,7 +1832,6 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
 		goto out;
 	}
 
-	if (iwl_have_debug_level(IWL_DL_ISR)) {
 	/* NIC fires this, but we don't use it, redundant with WAKEUP */
 	if (inta & CSR_INT_BIT_SCD) {
 		IWL_DEBUG_ISR(trans,
@@ -1852,7 +1851,6 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
 			iwl_pcie_rxmq_restock(trans, trans_pcie->rxq);
 		}
 	}
-	}
 
 	/* Safely ignore these bits for debug checks below */
 	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);