libflash: Fix Coverity defect 97867

CID 97867 (jk-ozlabs#1 of 1): Uninitialized scalar variable (UNINIT)
5. uninit_use: Using uninitialized value rc.

Signed-off-by: Cyril Bur <[email protected]>
Signed-off-by: Stewart Smith <[email protected]>

Author: cyrilbur-ibm

libflash/libflash.c

@@ -694,15 +694,15 @@ static int flash_set_4b(struct flash_chip *c, bool enable)
 int flash_force_4b_mode(struct flash_chip *c, bool enable_4b)
 {
 	struct spi_flash_ctrl *ct = c->ctrl;
-	int rc;
+	int rc = FLASH_ERR_4B_NOT_SUPPORTED;
 
 	/*
 	 * We only allow force 4b if both controller and flash do 4b
 	 * as this is mainly used if a 3rd party tries to directly
 	 * access a direct mapped read region
 	 */
 	if (enable_4b && !((c->info.flags & FL_CAN_4B) && ct->set_4b))
-		return FLASH_ERR_4B_NOT_SUPPORTED;
+		return rc;
 
 	/* Only send to flash directly on controllers that implement
 	 * the low level callbacks