drivers: nrf_mram: check for mram_latency service returns

When requesting/releasing the no_latency mode for the mram, verify that
the request/release is successful to avoid running into infinite loop if
the mram controller is in autopowerdown mode.

Signed-off-by: Riadh Ghaddab <riadh.ghaddab@nordicsemi.no>

Author: rghaddab

drivers/flash/soc_flash_nrf_mram.c

@@ -297,7 +297,11 @@ static int nrf_mram_write(const struct device *dev, off_t offset, const void *da
 
 	if (ironside_se_ver >= IRONSIDE_SE_SUPPORT_READY_VER) {
 #if defined(CONFIG_MRAM_LATENCY)
-		mram_no_latency_sync_request();
+		ret = mram_no_latency_sync_request();
+		if (ret) {
+			LOG_ERR("Failed to request no-latency mode for MRAM write");
+			goto unlock;
+		}
 #endif
 	}
 
@@ -346,7 +350,11 @@ static int nrf_mram_write(const struct device *dev, off_t offset, const void *da
 #endif
 	if (ironside_se_ver >= IRONSIDE_SE_SUPPORT_READY_VER) {
 #if defined(CONFIG_MRAM_LATENCY)
-		mram_no_latency_sync_release();
+		ret = mram_no_latency_sync_release();
+		if (ret) {
+			LOG_ERR("Failed to release no-latency mode for MRAM write");
+			goto unlock;
+		}
 #endif
 	}
 
@@ -374,7 +382,11 @@ static int nrf_mram_erase(const struct device *dev, off_t offset, size_t size)
 	/* Ensure that the mramc banks are powered on */
 	if (ironside_se_ver >= IRONSIDE_SE_SUPPORT_READY_VER) {
 #if defined(CONFIG_MRAM_LATENCY)
-		mram_no_latency_sync_request();
+		ret = mram_no_latency_sync_request();
+		if (ret) {
+			LOG_ERR("Failed to request no-latency mode for MRAM erase");
+			goto unlock;
+		}
 #endif
 	}
 
@@ -421,7 +433,11 @@ static int nrf_mram_erase(const struct device *dev, off_t offset, size_t size)
 
 	if (ironside_se_ver >= IRONSIDE_SE_SUPPORT_READY_VER) {
 #if defined(CONFIG_MRAM_LATENCY)
-		mram_no_latency_sync_release();
+		ret = mram_no_latency_sync_release();
+		if (ret) {
+			LOG_ERR("Failed to release no-latency mode for MRAM erase");
+			goto unlock;
+		}
 #endif
 	}