qcacmn: fix might sleep crash issue during rx buffer smmu mapping

When driver doing ipa rx buffer smmu mapping,
qdf_spin_lock_bh is used to protect rx descriptor pool,
but might sleep function is called by API ipa_is_ready.
This causes kernel panic about sleeping function called
from invalid context as following call trace:

  Call trace:
  ___might_sleep+0x204/0x208
  __might_sleep+0x50/0x88
  __mutex_lock_common+0x5c/0x1078
  mutex_lock_nested+0x40/0x50
  ipa3_is_ready+0x2c/0x60
  ipa_is_ready+0x24/0x38
  dp_ipa_handle_rx_buf_pool_smmu_mapping+0x2dc/0x6d0 [wlan]

Move the ipa is ready check function call outside of spin lock.

Change-Id: I5d3a79dff8a045791834733514a40f7c1ccb0d8b
CRs-Fixed: 2839292

dp/wifi3.0/dp_ipa.c

@@ -101,9 +101,6 @@ static QDF_STATUS __dp_ipa_handle_buf_smmu_mapping(struct dp_soc *soc,
 {
 	qdf_mem_info_t mem_map_table = {0};
 
-	if (!qdf_ipa_is_ready())
-		return QDF_STATUS_SUCCESS;
-
 	qdf_update_mem_map_table(soc->osdev, &mem_map_table,
 				 qdf_nbuf_get_frag_paddr(nbuf, 0),
 				 size);
@@ -202,6 +199,9 @@ static QDF_STATUS dp_ipa_handle_rx_buf_pool_smmu_mapping(struct dp_soc *soc,
 	struct dp_rx_desc *rx_desc;
 	qdf_nbuf_t nbuf;
 
+	if (!qdf_ipa_is_ready())
+		return QDF_STATUS_SUCCESS;
+
 	if (!qdf_mem_smmu_s1_enabled(soc->osdev))
 		return QDF_STATUS_SUCCESS;
 
@@ -252,6 +252,9 @@ static QDF_STATUS dp_ipa_handle_rx_buf_pool_smmu_mapping(struct dp_soc *soc,
 	qdf_nbuf_t nbuf;
 	int i;
 
+	if (!qdf_ipa_is_ready())
+		return QDF_STATUS_SUCCESS;
+
 	if (!qdf_mem_smmu_s1_enabled(soc->osdev))
 		return QDF_STATUS_SUCCESS;