iommu/arm-smmu: fix out of bound iova fault handling

qsmmuv500_iova_to_phys checks for out of bound iova and skips ECATS
operations.  While this is optimal, this also skips resuming stalled CB.
As part of S1 context fault handling iova_to_phys is followed by tlb
invalidation and sync.  With context bank in stall state, the sync
operation will timeout.

Example:

arm-smmu: FAR    = 0x000102325429beb4
arm-smmu: PAR    = 0x0000000000000000
arm-smmu: FSR    = 0x40000402 [TF R SS ]
arm-smmu: ECATS: address out of bounds: 0x000102325429beb4
arm-smmu: ECATS: address out of bounds: 0x000102325429beb4

arm-smmu: TLB sync timed out -- SMMU may be deadlocked

Call trace:
 qsmmuv500_tlb_sync_timeout+0x360
 __arm_smmu_tlb_sync+0x2b4
 arm_smmu_tlb_sync_context+0x4c
 arm_smmu_tlb_inv_context_s1+0x1ec
 arm_smmu_context_fault+0xb84
 irq_thread_fn+0x44
 irq_thread+0x160
 kthread+0x16c
 ret_from_fork+0x10

Fix this by resuming the context bank before bailing out for out of bound
iova.

Change-Id: I754b38a3761869a5f0c00688211d26f1b0f47eec
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>